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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#722223#7751. Palindrome Pathucup-team5217AC ✓904ms128200kbC++235.4kb2024-11-07 18:13:122024-11-07 18:13:13

Judging History

你现在查看的是最新测评结果

  • [2024-11-07 18:13:13]
  • 评测
  • 测评结果:AC
  • 用时:904ms
  • 内存:128200kb
  • [2024-11-07 18:13:12]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;

#define endl '\n'

#define maxn 35
#define maxv 810005

typedef pair<int, int> pii;

const int way[4][2] = {{0, -1}, {0, +1}, {-1, 0}, {+1, 0}};

string a[maxn];
pii nxt[maxv];
int dis[maxv];
bool vis[maxn][maxn];
vector<pii> graph[maxv], rgraph[maxv];

int _(pii x, pii y) { return (x.first - 1) * 27000 + (x.second - 1) * 900 + (y.first - 1) * 30 + (y.second - 1);  }
pair<pii, pii> $(int v) { return {{v / 27000 + 1, v / 900 % 30 + 1}, {v / 30 % 30 + 1, v % 30 + 1}}; }

void solve(void) {
    int n, m;
    cin >> n >> m;

    a[0] = a[n + 1] = string(m + 2, '0');
    for (int i = 1; i <= n; i++) cin >> a[i], a[i] = '0' + a[i] + '0';

    auto addEdge = [&](int p, int q, int t) {
        return graph[p].emplace_back(q, t), rgraph[q].emplace_back(p, t);
    };

    for (int ax = 1; ax <= n; ax++)
        for (int ay = 1; ay <= m; ay++)
            for (int bx = 1; bx <= n; bx++)
                for (int by = 1; by <= m; by++)
                    if (a[ax][ay] == '1' && a[bx][by] == '1')
                        for (int t = 0; t < 4; t++) {
                            int tax = ax + way[t][0], tay = ay + way[t][1];
                            if (a[tax][tay] == '0') tax = ax, tay = ay;
                            int tbx = bx - way[t][0], tby = by - way[t][1];
                            if (a[tbx][tby] == '1') addEdge(_({ax, ay}, {bx, by}), _({tax, tay}, {tbx, tby}), t);
                            if (a[bx + way[t][0]][by + way[t][1]] == '0')
                                addEdge(_({ax, ay}, {bx, by}), _({tax, tay}, {bx, by}), t);
                        }

    for (int i = 0; i < maxv; i++) nxt[i] = {-1, -1}, dis[i] = -1;
    queue<int> que;
    for (int x = 1; x <= n; x++)
        for (int y = 1; y <= m; y++)
            if (a[x][y] == '1')
                nxt[_({x, y}, {x, y})] = {0, 4}, dis[_({x, y}, {x, y})] = 0, que.push(_({x, y}, {x, y}));
    while (!que.empty()) {
        int p = que.front();
        que.pop();
        for (auto [q, t] : rgraph[p])
            if (dis[q] == -1) nxt[q] = {p, t}, dis[q] = dis[p] + 1, que.push(q);
    }

    // for (int ax = 1; ax <= n; ax++)
    //     for (int ay = 1; ay <= m; ay++)
    //         for (int bx = 1; bx <= n; bx++)
    //             for (int by = 1; by <= m; by++) {
    //                 int p = _({ax, ay}, {bx, by});
    //                 cerr << "# " << ax << ' ' << ay << ' ' << bx << ' ' << by << ' ' << dis[p] << endl;
    //                 // auto [q, t] = nxt[_({ax,  ay}, {bx, by})];
    //                 for (auto [q, t] : graph[p]) {
    //                     auto [u, v] = $(q);
    //                     cerr << u.first << ' ' << u.second << ' ' << v.first << ' ' << v.second << ' ' << t << endl;
    //                 }
    //             }

    int sx, sy, tx, ty;
    cin >> sx >> sy >> tx >> ty;
    if (dis[_({sx, sy}, {tx, ty})] == -1) return cout << -1 << endl, void();
    mt19937 rnd(114514);
    while (clock() * 1000. / CLOCKS_PER_SEC < 900) {
        int rest = 0;
        for (int i = 1; i <= n; i++)
            for (int j = 1; j <= m; j++)
                if (a[i][j] == '1') vis[i][j] = true, rest++;

        int p = _({sx, sy}, {tx, ty});
        string ans;
        rest -= vis[sx][sy], vis[sx][sy] = false;
        rest -= vis[tx][ty], vis[tx][ty] = false;

        while (rest) {
            bool mov = false;
            shuffle(graph[p].begin(), graph[p].end(), rnd);
            for (auto [q, t] : graph[p])
                if (dis[q] != -1 && (int)ans.size() + 1 + dis[q] <= int(1e6)) {
                    p = q, mov = true, ans.push_back("LRUD"[t]);
                    auto [u, v] = $(p);
                    rest -= vis[u.first][u.second], vis[u.first][u.second] = false;
                    rest -= vis[v.first][v.second], vis[v.first][v.second] = false;
                    // cerr << "! " << u.first << ' ' << u.second << ' ' << v.first << ' ' << v.second << ' ' << rest << endl;
                    // cerr << ans << endl;
                    break;
                }
            if (!mov) break;
        }
        if (rest) continue;
        while (dis[p]) ans.push_back("LRUD"[nxt[p].second]), p = nxt[p].first;
        string nans = ans;
        reverse(ans.begin(), ans.end());
        nans.append(ans.begin(), ans.end());
        cout << nans << endl;

        // for (int i = 1; i <= n; i++)
        //     for (int j = 1; j <= m; j++) vis[i][j] = true;

        // int x = 1, y = 1;
        // vis[x][y] = false;
        // for (auto i : nans) {
        //     int t;
        //     if (i == 'L')
        //         t = 0;
        //     else if (i == 'R')
        //         t = 1;
        //     else if (i == 'U')
        //         t = 2;
        //     else
        //         t = 3;
        //     int tx = x + way[t][0], ty = y + way[t][1];
        //     if (a[tx][ty] == '0') tx = x, ty = y;
        //     x = tx, y = ty;
        //     vis[x][y] = false;
        // }
        // assert(x == tx && y == ty);
        // for (int i = 1; i <= n; i++)
        //     for (int j = 1; j <= m; j++)
        //         if (a[i][j] == '1') assert(!vis[i][j]);
        return;
    }
    cout << -1 << endl;
    return;
}

int main() {
    ios::sync_with_stdio(false), cin.tie(nullptr);

    int _ = 1;
    while (_--) solve();

    return 0;
}

这程序好像有点Bug,我给组数据试试?

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 14692kb

input:

2 2
11
11
1 1 2 2

output:

RLDDLR

result:

ok Valid Solution (Length = 6).

Test #2:

score: 0
Accepted
time: 0ms
memory: 13856kb

input:

2 2
10
01
1 1 2 2

output:

-1

result:

ok No Solution.

Test #3:

score: 0
Accepted
time: 0ms
memory: 14212kb

input:

1 1
1
1 1 1 1

output:



result:

ok Valid Solution (Length = 0).

Test #4:

score: 0
Accepted
time: 4ms
memory: 13480kb

input:

5 4
1111
1111
1111
1111
1111
4 2 4 2

output:

LLURLDDURRUDRLDLDRRDDURDDLDLRRDULRDURULRLDLLDLURUUDUUDDUULDLRUDDLDRDRLDRRRRURRUUDRDRLUDRRRDDUDRLURLDULRDRLUDDLURLDLRULRUUULDDUDRLDULUURDUULDRRRLDRDLDRUULURRUDULLLLUDURRULUURDLDRDLRRRDLUUDRUULUDLRDUDDLUUURLURLDLRULDDULRDRLUDLRULRDUDDRRRDULRDRDUURRURRRRDLRDRDLDDURLDLUUDDUUDUURULDLLDLRLURUDRLUDRRLDLDDR...

result:

ok Valid Solution (Length = 322).

Test #5:

score: 0
Accepted
time: 4ms
memory: 13524kb

input:

5 5
11111
10101
11111
10101
11111
1 4 5 5

output:

RLDLLUDDRRULDLRRLDRDUDLURRUDUUDUDRDLDUDDURURDLUUUUDDRUULRUDUDRDDLLRUULDDRRULRDDURDRLRDLUDLDRRDRLLRLDLUDRRDURULULDUDLDLUDDUDRDUDLURLRULLDUURDDLRLDRDUURULLDLUDLRUDDRLLLRUDDULDLUUUURLDDLRUUUULDLUDDURLLLRDDURLDULDLLURUUDRDLRLDDRUUDLLURLRULDUDRDUDDULDLDUDLULURUDRRDULDLRLLRDRRDLDULDRLRDRUDDRLURRDDLUURLLDD...

result:

ok Valid Solution (Length = 362).

Test #6:

score: 0
Accepted
time: 0ms
memory: 15480kb

input:

5 3
111
100
111
001
111
4 3 3 2

output:

LRULRUDRLLLLRRURLUURDRDRDLDDDLRRUULLUURRLDDDLDRDRDRUULRURRLLLLRDURLURL

result:

ok Valid Solution (Length = 70).

Test #7:

score: 0
Accepted
time: 0ms
memory: 14332kb

input:

5 4
1001
1101
1111
0011
0010
2 2 1 1

output:

LLULLUUDLLLURRULURLLUDRRDLDLLUUULURRRULDDDRRDLURDUDRLUDDULRDUDRULDRRDDDLURRRULUUULLDLDRRDULLRULURRULLLDUULLULL

result:

ok Valid Solution (Length = 110).

Test #8:

score: 0
Accepted
time: 0ms
memory: 14948kb

input:

5 3
101
111
100
111
100
4 1 2 2

output:

LRUUUDRURRLDLLRLLULRDDRULLUDUUDLLDDULLRLRDRRDDULDRRRRDRUDLDDDLDDDDDRLDRDUUURRUUUDRDLRDDDDDLDDDLDURDRRRRDLUDDRRDRLRLLUDDLLDUUDULLURDDRLULLRLLDLRRURDUUURL

result:

ok Valid Solution (Length = 152).

Test #9:

score: 0
Accepted
time: 0ms
memory: 13932kb

input:

5 5
01110
10110
11110
11011
11100
2 4 5 1

output:

LLURLUDDRRDDRLULDRLLUDRULLDRLRDUDRDDDUDDDURRUDURUURRDRRLURDLRDUULRLURDUUULLLRRUUDDLLLDDDRLDRLUURRUULRDLRDDDLLLDDUURRLLLUUUDRULRLUUDRLDRULRRDRRUURUDURRUDDDUDDDRDUDRLRDLLURDULLRDLULRDDRRDDULRULL

result:

ok Valid Solution (Length = 192).

Test #10:

score: 0
Accepted
time: 4ms
memory: 13876kb

input:

5 3
011
111
110
111
011
3 1 2 1

output:

LLDRLUDDRLURRLURDLLRULRRDLDRRUUULRDLRRLRLLLLULURDUDLRLDLUUDUDLUUUUURLURURRRURLDDDDLRURRRURULRUUUUULDUDUULDLRLDUDRULULLLLRLRRLDRLUUURRDLDRRLURLLDRULRRULRDDULRDLL

result:

ok Valid Solution (Length = 160).

Test #11:

score: 0
Accepted
time: 0ms
memory: 13524kb

input:

4 5
11111
11111
11111
11111
3 2 1 3

output:

LLURLUUDRRUDRLDLDDDRDURRDLDDDLRDLDDLUURRDURLULURUUDLLDUDRDRLRDULLURLRRRDRLLURLLUDURLRULUDUURUDRLLDDLLRDURUUDULURLRUDULLRULLRDRRRLRULLUDRLRDRDUDLLDUURULULRUDRRUULDDLDRLDDDLDRRUDRDDDLDLRDURRDUULRULL

result:

ok Valid Solution (Length = 196).

Test #12:

score: 0
Accepted
time: 3ms
memory: 14452kb

input:

5 5
11111
10101
11111
10101
11111
2 5 1 1

output:

LLULLUUURLLDRLUURDLDUURRDLDLLRDDLRDRDUDDDRRLDLURUUDUUURLUDDUDLDDLLRRLLUDRDDRRLLDRURRRDLUURURUDDLUUDRLDRURUUDUDULUDULULURULRRDUDRDUULLDLDURDUUULLDLDRUURRLDRLUDLUUDLDLLDLDUULDULRDLRRUURDLDLLUUUDRUDLDLLUUDRDUDRRLURULULUDULUDUDUURURDLRDUULDDURURUULDRRRURDLLRRDDRDULLRRLLDDLDUDDULRUUUDUURULDLRRDDDUDRDRLDD...

result:

ok Valid Solution (Length = 330).

Test #13:

score: 0
Accepted
time: 0ms
memory: 14908kb

input:

4 5
11111
10000
11111
00001
1 3 4 5

output:

LLDRLUDDRRULUUULDRLLDRRRDDUUUDULRULRRDLULDLLDDULUUDUUDRLUULLRURDDDDLRDRDUDDRDDLLLLDDRDDUDRDRLDDDDRURLLUULRDUUDUULUDDLLDLULDRRLURLUDUUUDDRRRDLLRDLUUULURRDDULRDLL

result:

ok Valid Solution (Length = 160).

Test #14:

score: 0
Accepted
time: 4ms
memory: 15008kb

input:

3 5
10100
00010
00111
1 3 1 1

output:

-1

result:

ok No Solution.

Test #15:

score: 0
Accepted
time: 0ms
memory: 15168kb

input:

4 5
10001
11111
11100
11111
4 5 3 1

output:

LLULLUUUDUUDRRDLDDDRUDDLRRDDDLUURRDDDULRRDRLLDDLLRDRRLUDDDRRUULDDDRRLDDURDDDLDRRDUUDUUULLULL

result:

ok Valid Solution (Length = 92).

Test #16:

score: 0
Accepted
time: 0ms
memory: 13572kb

input:

3 5
11111
10100
11111
1 2 3 5

output:

RLUUURURRLLDRRUDRDLDUDRUULRLRULUUDUURDURDRRLDDULDUDLRRULDDUDUUDLLRLUURURLDDULRURDRDLLUURRRRUULLDRDRURLUDDLRURUULRLLDUUDUDDLURRLDUDLUDDLRRDRUDRUUDUULURLRLUURDUDLDRDURRDLLRRURUUULR

result:

ok Valid Solution (Length = 178).

Test #17:

score: 0
Accepted
time: 889ms
memory: 17392kb

input:

4 5
01110
10101
11011
10111
1 3 2 3

output:

-1

result:

ok No Solution.

Test #18:

score: 0
Accepted
time: 4ms
memory: 14704kb

input:

5 5
11111
11111
11111
11111
11111
1 3 5 2

output:

LLDLRUDDRLLDRRDLUURUUURRDLDLUUUUUUDLDUDDURRRDLUDUUDUUUURDDUDUUDDLRLDRDDDRRLURLLUDURLRUUDURDRUDULURDLLURLUDULULURDUDRDRRRUDURLLDDDDLLRUDURRRDRDUDRULULUDULRULLDRULUDURDRUDUURLRUDULLRULRRDDDRDLRLDDUUDUDDRUUUUDUUDULDRRRUDDUDLDUUUUUULDLDRRUUURUULDRRDLLRDDURLDLL

result:

ok Valid Solution (Length = 256).

Test #19:

score: 0
Accepted
time: 5ms
memory: 15244kb

input:

5 5
11111
10101
11111
10101
11111
5 1 2 3

output:

LLRLRUUURLLDRLULDDDRULDDDRDDDLUURRDLDUDDRDRLLRDRUUDUUUUUDLDLLUDDLLLUDLDDRRLLLULUDDRLRULDLLDRUDDRURLDULRUUUUDUDURUDULRRRRULLDDUDRUUUUDDURDULURUUDRLDDRULDDLRDUDDLDDRLULDUDDDULLRRUUDRLDDUULLUUDDLRDUURRLLUDDDUDLULRDDLDDUDRLDDLURDDLRDUURULUDRUDDUUUURDUDDLLURRRRLUDURUDUDUUUURLUDLRURDDURDLLDLURLRDDULULLLRR...

result:

ok Valid Solution (Length = 372).

Test #20:

score: 0
Accepted
time: 4ms
memory: 13668kb

input:

5 5
11111
10000
11111
00001
11111
4 5 5 3

output:

LLDLLUDDRRUDDDRLDRLLRUDLUDUUUUURLDLLDUDURURURLDURDLRULRRDULRLUURRRRUURRDDDDRDDUUDDLLRURUDLURURDURRLDURRUDLDDDUDDUUDDUURRLULDURLULUDRUDUDRULRDDRDURDUURUDLRRLUDLUUDDLULDLLRRURLURDUDLDUDULRDDLDURUURLLRDRDUUDUDDLDRRDLDDRLULURULDUDULRURDRLLURRDURDULDDLULLURLRUUDLLLLUULDRLRDURDRRLRDRLRDURRRRLRULDUUDRLLDRD...

result:

ok Valid Solution (Length = 870).

Test #21:

score: 0
Accepted
time: 4ms
memory: 14296kb

input:

5 5
01010
10101
10101
11001
10011
4 1 5 4

output:

-1

result:

ok No Solution.

Test #22:

score: 0
Accepted
time: 4ms
memory: 13932kb

input:

5 5
10101
11111
10101
11111
11111
3 1 2 4

output:

LRULRUDULRULDLRRLULRUURRDRDLRRDUDLUUUULRRDRLDLURULLLRUURUDDLRUUULRLURDDLDRLLRLLDDRRLRUUDURDLURRUDLLRRURUDLDRLRRDRUULULRDLUDLUULDURDRUDUDDDLUDLRLDDUURLDDLDDRUDLLDDRLURDUDDLURLLRUUDRRDULDRRDULLUULLUDRRDLUDRRDUURLLRULDDUDRULRDDLLDURDDLDDLRUUDDLRLDULDDDUDURDRUDLUULDULDRLULUURDRRLRDLDURURRLLDURRULDRUDUUR...

result:

ok Valid Solution (Length = 384).

Test #23:

score: 0
Accepted
time: 0ms
memory: 13536kb

input:

5 5
00001
11111
01110
01111
01111
1 5 5 2

output:

LLDLRUDDLRULRRDRLRRRUDRLDLDLLRDDRRDLDURRDURLULUULULRUDRRUDLDRRDDRLLDLDLRDURRRLRDRRLURLDDURLDLL

result:

ok Valid Solution (Length = 94).

Test #24:

score: 0
Accepted
time: 4ms
memory: 15200kb

input:

5 5
01011
10111
11011
10101
01110
4 1 2 3

output:

-1

result:

ok No Solution.

Test #25:

score: 0
Accepted
time: 0ms
memory: 17512kb

input:

10 8
11111111
11111111
11111111
11111111
11111111
11111111
11111111
11111111
11111111
11111111
7 7 3 6

output:

LLURLUUURRUDDLDRDDLDUURRDRDLRRDUDLULUURRDURLULURUUDUUUULUDUDUUDDLRRRLDRDRRLDRLLUDDRLRDURLURUDDUDLLRRLULUUDRUULURUUDRULDRDUDRDUDRUUDRUDUDDULDDLRLDRDUUDDDLDRRUDLLDDRLURDRLDLURLLRDLURRUURULLLLUUDLLRLULDUURLLDRLUUUUDDLLULRRUUDRURRRLLURLULDUUDRDLUULDDLDUDLLLLLUDLLLLRDDRRLRDURDDRLRULLLLLLLLLLUULDDLUDRLDUR...

result:

ok Valid Solution (Length = 1010).

Test #26:

score: 0
Accepted
time: 5ms
memory: 14600kb

input:

10 6
111111
101010
111111
101010
111111
101010
111111
101010
111111
101010
1 6 2 3

output:

LLULLUUURLLDRLDLUUDRDURRDLDLLDDUDLUDDUDUUURLULURUUDLULUUDDUDUULDLLLUDLDURULURLUUDLRRRDUURUDURDRLLRLULUDRDDURLRUURULULRRRULRRULRUUUUUUULDUURULRUURLDUURDDLDLLUDLLDDRLULDUDDLURRRRUULDDRDRDRRRRLUDDLRLULURURLLURLULUDRDRRRUURUUDDLURRLLURRRRDUUDDLRUDUDRRDDLURLRURLRLRLLDLDDUDRURDDRRLDRURRRRLLLRURLDLRUDLRRUU...

result:

ok Valid Solution (Length = 2528).

Test #27:

score: 0
Accepted
time: 2ms
memory: 15400kb

input:

10 10
1111111111
1000000000
1111111111
0000000001
1111111111
1000000000
1111111111
0000000001
1111111111
1000000000
5 5 5 2

output:

LLUUUDRDUUDULRRLDUUDRRLLUUULLRRULRDDLDRLLLRLDLURUDUUUUDULDUDUURLLRLLLLDDRLLURLDRLDLLLUUDURDLLDRUUDULDLRRDRURUULULLUUUUDLDUDRDLRURURURUUDRULLLRRLDURULDURLDUDLURDRULRDLDRLLRDUUDURDLURDLUDURDUDLLLRDDLRRRRRLLLDDULLLDRUULRDRDLDRRRRDUUDRDUDRUDDLULUDUDRUULRLLLLRDRLLLLUDDUULLURRDRRLRUDLDLURLRLURRLDUUDLLRDUR...

result:

ok Valid Solution (Length = 6574).

Test #28:

score: 0
Accepted
time: 877ms
memory: 18396kb

input:

10 10
1010110101
0000011010
1001001001
0011111000
1000111100
1011101001
1100110011
0110001011
0011111000
0101011101
7 5 4 3

output:

-1

result:

ok No Solution.

Test #29:

score: 0
Accepted
time: 5ms
memory: 16100kb

input:

10 6
100100
111111
100001
111111
101111
111111
101010
111111
111100
111111
6 5 7 3

output:

LLULLDUDRLLDRRDDLRRDDUDRUUURLRDRLRDLDULUDRLLDURLDLDLRRULUDRLRUDDLLLRRDDURRLURLLUDRRLRUUDLUDRLDDLURDDDLRDLDDULRRUUUURULRUUULDDDRUDRUDLDLUUURDDLRLURDUURUDLDRRDDLLDDLLURDUDDLURLLRUULRRDDLDRRRRUUDRRUURRUUURRLDLLDRLLDLRLDDRUUULRDDDUUDDRDULUUUDLDRUDULURURLULLRLDDLLLRRDRRRULLULDDLRLURLLLRLRLRLDLLULLULULDUU...

result:

ok Valid Solution (Length = 844).

Test #30:

score: 0
Accepted
time: 0ms
memory: 15164kb

input:

10 8
11111110
11110111
01111111
11111101
11011101
11111111
11111011
11011101
11001111
11111110
7 1 2 1

output:

LLULLUUURLLDRLDLUULDUURRDRULRRDDRRDLDUDUUURLULURDDDLRUULUDRRLDUUUUURLURURRRDRRULRURLLUUDLRDRUDDRURLRLDRUUDDDUDLRUUUDLRRDDRLRUUDRURUUUURDUULDDLRLDRDUURUDLDRRUDLRRDLLURDLLRLDLLRLUUDLLDULULULUDULULRLULDDUUDDLRLDULUDRRRULRRUUDLDRRRLLURRURDUUDLDLDULDDLLDRULLDRUDRLRLDDDRLLRDUDDLLLLRRDLLLLLLLLUDUDDDLDRLUDD...

result:

ok Valid Solution (Length = 1584).

Test #31:

score: 0
Accepted
time: 901ms
memory: 18692kb

input:

10 10
1111011101
1110111110
1111011111
1011101111
0101010111
1110111111
0111010111
1011111011
0111010101
1011111110
2 6 7 4

output:

-1

result:

ok No Solution.

Test #32:

score: 0
Accepted
time: 3ms
memory: 17120kb

input:

8 10
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
8 10 6 10

output:

RLURLUDDRLURRLDLDDRDUURRDLDLLRDURRDLDULRDURRULURUUDUUUURUDDLRDDDLRLURRDDLDDRRLUUDDRLRUUDURDRUDULURLDULRDRRUDULURUUURULRUUDLDDUDRUUUDDUDDULRURLRLDRDDRLUDLDRLDDLLDDLLURDLLRLURLLRDRDLLDDLULULUUUDLLLLULUUURLLDRLUURUDDRLULULUUDRURRRRLLURULDUUDRDRUULDDLDUDLLLLDURRLLLDDDRRLRUULDULULURLLULLLLLRUULDDLUDRLDDR...

result:

ok Valid Solution (Length = 1146).

Test #33:

score: 0
Accepted
time: 7ms
memory: 16780kb

input:

10 10
1111111111
1010101010
1111111111
1010101010
1111111111
1010101010
1111111111
1010101010
1111111111
1010101010
3 5 9 1

output:

LLULLDDURLDRDLDDLDLRDUULDLDLLDDUDLUDDUDDDURLULURUUDUUUULRUULLUDDLLLRRRUDLDRDRLLUDDRLRDLUDLDRRURLLRLDLUUUDLDLURURUUURULRUUULDDUDRUUULUULDUUDDDRRLDRDUURLLRDRRUDLLLDRLURRRLDLURRRRUUDRULDLDRDLRDURULRLULDDUUDDRRLDULRUURLRRRRUUDDLDRURLLDRRLUDLDRDRUDRDURDUDRDLLDURUUUURUUURRRDDRDDRLRURRDRRRLLLRURLDLRUDLRRDR...

result:

ok Valid Solution (Length = 2378).

Test #34:

score: 0
Accepted
time: 0ms
memory: 15144kb

input:

10 10
1111111111
1000000000
1111111111
0000000001
1111111111
1000000000
1111111111
0000000001
1111111111
1000000000
5 4 7 2

output:

LLUUUDRDUUDULRRLDUUDRRLLDDDLLRRUDLDLDUDDDRLLDDUUUDDURUDURUDUDLUDLLLRLLDDULLDRLLUDDRLRDLUDDULUDDLURRDUURDDUUUDDDDRULULLURULRRDLRURURURUUDRULLLRRLDURULDURLDUDLURDRULRDLDRLLRDUUDURDLURDLUDURDUDLLLRDDLRRRRRLLLDDULLLDRUULRDRDLDRRRRDUUDRUDDURURLULUDUDRUDRLLRLRDLLRLRLDDULRLRUULDRDUDLLRURULRLRULLRUDDURLLDRU...

result:

ok Valid Solution (Length = 5000).

Test #35:

score: 0
Accepted
time: 0ms
memory: 15512kb

input:

9 10
1111001000
1110010111
0001001000
0101000101
1101000001
0111100110
0010010000
0001001000
1011001101
2 8 5 2

output:

-1

result:

ok No Solution.

Test #36:

score: 0
Accepted
time: 0ms
memory: 15420kb

input:

5 10
1001011101
1111111111
1000011001
1111111111
1101110010
4 3 4 7

output:

LLULLDUURLLRDDDLDDRUUDRRDDDRLRDURLDLDULRDURLUULRUDUURUULDDUDUURDUDULRDRDRRLLLLDUDRRLRDUDURDLLDRUULLDUURUDDDUUDDRDUDLDLRUDULUUULDDDRUUULDUULLDLRLDDURRRUDLDRRUDLRRDLLULDRRRUUUDDLRDUURRDRDLDRRUUDDLUULLDLURDUULURRDULDRLDRLRDURRURLLLLURLDLUUUDLDLUULDDRDUDRRLRUUDLLLLUDRRUDUUDLURUDUDLRRRRRRLRLDULDDLUDRLDLR...

result:

ok Valid Solution (Length = 824).

Test #37:

score: 0
Accepted
time: 904ms
memory: 17348kb

input:

7 10
1111111001
1111101110
1111011111
1101011101
1111011111
1111001011
1111111011
7 10 7 2

output:

-1

result:

ok No Solution.

Test #38:

score: 0
Accepted
time: 0ms
memory: 15364kb

input:

9 10
0101011101
1111111111
0101111111
1111111111
1111110101
1011111111
1101111101
1111111011
1101011111
3 7 7 10

output:

LLURLUDUDRDULLDLDDLRUURRDRDLRRDUDLDLDRLDDURLULURUUDUUUUUDRURLDDDRLRDLDDDRRLLLLUUDDRLRDUURUDDULULURRLLRUUDDDULLURDRDDRLRRUURUURLDDLUDRLLUDULUDLRRRRDDRRUDLDRRDDRRDDRLURDDLRLLRLLRUUDRRDDRURRLLLUDDLRLULDDURLDDRLDUUUDLLLULRDRDDRURRRLLURRULUUUDLDLDULDDLDDLURLRDULLLLLRDDRRLLRDLDDRLRURRRLLLLLLRUUURDLUDRLUUR...

result:

ok Valid Solution (Length = 1422).

Test #39:

score: 0
Accepted
time: 7ms
memory: 16296kb

input:

10 10
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
9 5 3 2

output:

LLULLUUURLLDRLDLDDLDUURRDLDLURLLRRDLDULRDURRULURUUDUUUURUDRLRDDDLLUDUURDRRRDRLLUURRRLDURRRDRUDDLRDLRLUUUDLLDRRURUUURULRUDUDRDUDRUUDRUDUDDULDDLRLDRDUUDDDLDRRUDLLDDRLULDUDDLURLLRDLURRUURURRRRUUDRLRLULDUURLLDRURRUUDLLLULRDRLDLULLLLLURLULDUUDRDLUULLRLUULURLRUDDLLLLRDDRRLRDULDDLLLRRDLLLLLLLRUULDDRDDUDUUR...

result:

ok Valid Solution (Length = 2706).

Test #40:

score: 0
Accepted
time: 3ms
memory: 15776kb

input:

10 10
1111111111
1010101010
1111111111
1010101010
1111111111
1010101010
1111111111
1010101010
1111111111
1010101010
2 1 1 3

output:

LLULLUUURLLDRLDLDDLDUURRDLRLRRDUDLUDDUDUUURLULURUUDUUUULUDRLRUDDLLDLLDDDRRURRLLULRRLRDLUULURRDLRDRLLRDRUUUUDRLUURULUUDUUUULDUDDLLURRRULDUURULRUURLDUURUDUURRDDRRDDRRDLDUDDLURLURULDLDUDULRULDDULUDDULLDLURLURUDRULLDRUDULRUUUDDLRRRLLURLULUDURULLUULDDLULLURLRUUDLLLLDUULDLLRURDRULLLRULRLLLLLLLULUDLDDUDDUR...

result:

ok Valid Solution (Length = 2324).

Test #41:

score: 0
Accepted
time: 5ms
memory: 14684kb

input:

10 10
1111111111
1000000000
1111111111
0000000001
1111111111
1000000000
1111111111
0000000001
1111111111
1000000000
7 4 3 5

output:

LLUUUDRDUUDULRRLDUUDRRRRDDUUUDULRULRRDLRRDLLDDULULDDLURLUDRLRDRUUUULRURUDUURUUUDULLRLDRUULLDUDUUDRLUUDLURURDUUDRRULLLRDLURLLLUURRRULUDDLULLULLRLDUDDUUUDULRRUDUDRDLRRRDLRUULDDRRUDULULURULDRDLLUDDLRUULRURRDLUUDRUDRDRLRRRRUUDDLRRRRLURRULDDRRRULLURUURLULURLRDRDUUDULULLLLLRRULUULLRRULLLLLLLRUDDLULUDRLDDR...

result:

ok Valid Solution (Length = 7862).

Test #42:

score: 0
Accepted
time: 871ms
memory: 18244kb

input:

10 10
1110000101
1100110001
1011011001
0000000111
0010010111
0100111011
1110010011
1100111111
0110001110
0100000101
9 9 6 10

output:

-1

result:

ok No Solution.

Test #43:

score: 0
Accepted
time: 0ms
memory: 16132kb

input:

10 10
1110111011
1111111111
1110110000
1111111111
1010011100
1111111111
1111001110
1111111111
1001010011
1111111111
6 9 2 9

output:

LRDLRURUDDUDLRRLDDLDDURLLRDUDUUULRDRDDLRUURRUUURLDLULUDURDUDURRDLRLDRLUULLLURLLDURRRRUUDRDULUDRLLRRDDRRDUUUDDDDRUUURDLRRDUULULLURUUUUDLDUURLDDLRRRDURRUDLDDLUDLRRDLRRRDULRLURRRRUUDLLDDLDRRRRLUDDLRLDLDDURLDURRURUUDDLLULRRLDURULULURURLULDUUDRDLUDLUUUDUDLLLLDURULLRRDURLLLRURDULRLURLLLURLRLLRRLUDLUDRLDDR...

result:

ok Valid Solution (Length = 1832).

Test #44:

score: 0
Accepted
time: 6ms
memory: 15744kb

input:

10 10
1111110011
1011111110
0111011111
1101101101
1111111110
1110111101
1011011111
1111111101
1011111101
1111111011
7 3 5 5

output:

LLULRUUURLLDRRDLDDRDUURLDLDLLRDUURDDUURRDDRLDLURUURLUUULUDDRLDDDLUUURDDLRDULLRDULURLRDDURDDLUDULURRLLRUUDURRULDRUDDULLRUUURUUURUUUUUUURDUURRDLRRDRDDRRUDDLRDLDRRDDRLURDUDDLDRLRLUUDLLDDLULULLUUDLLLRUDUUULLLDRRULUUDLULDLRRUUDLURLLRLLDLDLDUUDRDLLULDURRLLDLLLUULDUDUUDLRLLRUURUDRRRDLURLULLLLLUDLDDDRDUDDUL...

result:

ok Valid Solution (Length = 4792).

Test #45:

score: 0
Accepted
time: 3ms
memory: 17228kb

input:

10 10
1101011101
1110111011
0101110101
1111101011
1111111111
1010111010
0111111101
1111101011
0111111101
1011101111
3 8 2 2

output:

-1

result:

ok No Solution.

Test #46:

score: 0
Accepted
time: 14ms
memory: 27800kb

input:

20 12
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
111111111111
16 8 13 12

output:

RLURLUUURRUDDLDRDDLDUURRDRDLRRDUDLDLDUDDDDRRDLURUUDUUUURUDRLLUDRRRLDLDDDRRURRLUUDDRLRDUULUURRDRLURLDULRDRRUDDLURUUURULRUUULDDUDRLDULUULDUURUDULLDRDLRUUDURDDRURRDDRLURDRLRLURLLRDRDRRDDLDLLLLDULULRLULDDUUDDLRLDULUDRULRLLRDLDRUDDRRLLUUUDLRDRRDRUURRDLDUDRLLLDURULLLRUDRDRURULDDLLLRRULLLLLLLLUULDDLUDRLDDR...

result:

ok Valid Solution (Length = 4820).

Test #47:

score: 0
Accepted
time: 21ms
memory: 30868kb

input:

20 17
11111111111111111
10101010101010101
11111111111111111
10101010101010101
11111111111111111
10101010101010101
11111111111111111
10101010101010101
11111111111111111
10101010101010101
11111111111111111
10101010101010101
11111111111111111
10101010101010101
11111111111111111
10101010101010101
111111...

output:

LLULLUUURLLDRLDLUUDRDURLDLUDULDDLRDLDUDDDDRLDLURUUDUUUULUDRLRUDRLRLUDRUDLLRRUDLLLULLLUUDURDRUDDLURLDULRDRRUDDLURUUURULRUUULDDUDRUUUUUULDUURUDULLDRDUURUDUURRUDRLDDLLDRDUDDLULLLRUUDRRDDRDLLLLDULULRLULDDUUDDLRLDULUDRULULRDRRDRURRRRLLULULUUUDRUUUURDDRDUDLLLLDURULLLRUDRRURLLRRRUUULDRRRRRLRLLDUDDDLUDRLDDR...

result:

ok Valid Solution (Length = 10482).

Test #48:

score: 0
Accepted
time: 14ms
memory: 25040kb

input:

20 19
1111111111111111111
1000000000000000000
1111111111111111111
0000000000000000001
1111111111111111111
1000000000000000000
1111111111111111111
0000000000000000001
1111111111111111111
1000000000000000000
1111111111111111111
0000000000000000001
1111111111111111111
1000000000000000000
11111111111111...

output:

LLUUUDRDUUDULRRLDUUDRRRRDDULLRRULRDURUULDRUURLURULUURDUDLDUDUUDRLRLUDRDDULRDDDRUDDRLLULDDLDLULRLLRLDDLRDLUDLUULRURRDUUDURRLDUDDRRUDULDDLLURDLRDDRDRRURUDDULLUDUDRULRRULUURLLLRRDULULLDRRDLDRRURUDDRLUURULDDRULRRDLUDUDDUUDLURDLDUDULRURRULUULDULRDRULLDRDDULRLLUDUUUURDUDRLRUDRDDLLLRRURULUDUDDLUURUDRRLRRDR...

result:

ok Valid Solution (Length = 117858).

Test #49:

score: 0
Accepted
time: 4ms
memory: 22020kb

input:

20 16
0101001111110001
0000111101001011
0000111100011001
1101110100110100
1011011110001101
1101000110111111
0111010111100101
1101101111011001
1101010100000101
1111001000110010
0001011000101000
0101111010110110
0001101111000111
1010100010000110
0100100011011100
0100100101011111
0001000001001110
10011...

output:

-1

result:

ok No Solution.

Test #50:

score: 0
Accepted
time: 14ms
memory: 32220kb

input:

20 18
100101011111011110
111111111111111111
101111101010000001
111111111111111111
110010011011001010
111111111111111111
110110111110000010
111111111111111111
100001000001111000
111111111111111111
100010100111111000
111111111111111111
111100011010110111
111111111111111111
111101010111011110
111111111...

output:

LLULLDUDRRRURLULDDRUUURRDLDRLRDUDRDLDUDUUURLLRURULUURRULUDDLLUDDLLLRRDDURRLLLRUUDRRLRDURRDRRUDRLLRLDLURUDLDRUDLUUUURULRUULLDDUDRUDRUUUUDDRURDURRUURDRURRLDURUDLRRURLURDRLRLURLLRDRURRDDLDRRRRDDDULRLULDDDRLLDRLUUUDLDRLDLRRUDRRURRRRLURRULDDUDDDRUURUURLULURLRUDRRRRRDUURRLLRRURDRLLRRURRLLLLLRUULDDRRUULUDR...

result:

ok Valid Solution (Length = 9876).

Test #51:

score: 0
Accepted
time: 21ms
memory: 32092kb

input:

20 16
1110111111111111
1111111001111111
1111110111111011
1111110011111111
1111111111011111
1111110111101111
1111011111111111
1101111111111111
1011111111111001
0111111011111111
1110111111111111
1111111111111111
1111011011111111
0101110111111111
1110111101111110
1111111111111111
1111111111011111
11111...

output:

LRULLUDUDLUDDLDLDDLDUURLLRULLRRULRDURULRRDUDRLDRUDDLRRDLUDRLRURDLLLRLLDDRRRDRRUUDDRLLRRULUDDLURDDLLRLURRDDULDLURLDLRULRUUULDDUDRLDULUULDUURUDULLURDUURUDUURRUDRRDRRLURDUDDLURRRUUUDRRDDRDRRLLDULULRLULDDURLLDRURRUUDLLLULRDDURRURRRRLLURULDUUDRDRDURDDRDDLURDLLUDRLRLDDRRRLLRRDDDRLLRRDLLLLLLLRUDUDDLDDULDDR...

result:

ok Valid Solution (Length = 9878).

Test #52:

score: 0
Accepted
time: 878ms
memory: 31980kb

input:

20 18
110111110101110101
101010111110101010
110101111101111101
111011111011101111
010111110111111101
111011111011111011
011111110111010111
101110101010111010
010111110101110111
101010101011101110
011101110111011111
101010111011111010
010101111111110101
101011101110111011
110101011101010101
101010101...

output:

-1

result:

ok No Solution.

Test #53:

score: 0
Accepted
time: 17ms
memory: 29428kb

input:

14 20
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
...

output:

LLDLLUDDRLLDRLDLDDLDUURRDRDLRRDULRDURULRRDRLDLUDDUDUUUULUDRLRUDRLRLUDRUDLLRRUDLLLRUDUUUDURDRUDDDDRLDLRDUURDDUDLRUUURULRUUULDDUDRLDULUULDUURDDULUDRDDRRUDLDRRDDRRDDRLULDUDDLURDRRURDRRDDRDRRRRDUDRLRLULDDURLLDRURRUUDLLLULRDRLDLULLLLLURLULDUUDDDRULULDRDLLURRDRDDLLLLRUDRDLLRRDDURLRULLLLLLLLLRUULDDRRUULUDR...

result:

ok Valid Solution (Length = 3314).

Test #54:

score: 0
Accepted
time: 21ms
memory: 31740kb

input:

19 20
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
...

output:

LLRLRUUURLLDRLDLDDLDUURRDLRLRRDUDLUDDUDDDDRRUDLRUURRDLUUDLULLDLDLLRULDLURRRDRLLUDDRLRDURLUDLDDRLLRRDRURUDLDRULURUUURULRUUULDDUDRUUUUUULDUURUDLRRULDRRRUDRDRRUDLLDDRLULDUDDRURLLRDLURRDDRDRRRRDULDLDLDDLDUULDDRRLDULURRLUURRULLLLRRRRRURUULUUUDLDRUDUDRRDRLURLRUUDLLLLRUDRDLLRRDDDRLRURRRRRRLLLRUULDDLUDRLDDR...

result:

ok Valid Solution (Length = 16264).

Test #55:

score: 0
Accepted
time: 8ms
memory: 17948kb

input:

10 20
11111111111111111111
10000000000000000000
11111111111111111111
00000000000000000001
11111111111111111111
10000000000000000000
11111111111111111111
00000000000000000001
11111111111111111111
10000000000000000000
5 6 8 20

output:

LLURLDDURLDRRRDDLRRDUDLUDURLRRDUDRDDULRRDRRLDDLLURRLDRRLLDLRLUDRLRLDDRRUDUURRLLURDUUURRDDLURRDLRDRLLRDRDLLUDLRDRURRRUULDLDDRULRDRDUDLLRDRRRUDULLDRDUURUDLDDURRRRDDLLULDLLRLUDDUDLULRRRDLLLLRRRDURLDDRLUDURLURDDRDLULLUURLLULURRURULUURDURLDUDLLDRUDUDRRDUULDDDRRDLRLRRUDURLRDRULDRULLLLDDLLRLRRRLLDUUDRRLUDL...

result:

ok Valid Solution (Length = 39874).

Test #56:

score: 0
Accepted
time: 9ms
memory: 22136kb

input:

18 20
11011110100011011100
01100010001011110000
11100110001011101110
10110111100011001111
10100011111011110011
00001010110000010010
01101101100110010001
10001000111110000100
11000011001000001001
10101011101010100110
01111011011010100001
00010110000101101011
10110101011011000011
00110010111011000100
...

output:

-1

result:

ok No Solution.

Test #57:

score: 0
Accepted
time: 20ms
memory: 36128kb

input:

20 20
10101101000110011011
11111111111111111111
10110101010011101111
11111111111111111111
11010000010101011110
11111111111111111111
10100110101011011011
11111111111111111111
10010101101010101001
11111111111111111111
11101001101101101010
11111111111111111111
11100110110111110111
11111111111111111111
...

output:

LLULLDUDRLLDRLDLDDLDUURRDLDLLRDUDLDLDUDDDRRLDLURUUDLRRLLDULRLLRDUDULRDDURRLLLLUUDRUDUUUDLUDUULLLURLDULRUDRUDDLURUUURULRDLURRDDLUDRURUULDUURDDLRLDRURRRDDLDRRUDRRDDRLURDUDDLURLLRUUDRRDURDRDRRDDDULDUUDDDLRLLULLDUUUDDUDLLRURDDRULLLLLLRRRRDUUDDLLDLRDDRURLLURLUUDRLRLDRDULRLULRDRDUDULRULLLLRLUUULDDLUDRLDDR...

result:

ok Valid Solution (Length = 10002).

Test #58:

score: 0
Accepted
time: 29ms
memory: 34708kb

input:

18 20
11111111111110111111
01111111111011111111
01111111111110011111
11111111111101111111
11111011111110111111
11111111111110111110
11111111111111011111
11011111111111111110
11110111111111001111
10111111110110111111
11111011111111111111
11111111111011101111
11101111001111111111
11111111111111111111
...

output:

LLDLLUDUDLDDRLDLDDLUUDURDRDLLRRULRDLDRLDUURLULURDUDLRRURUDRLRDDDLRLDLDUDDUDDLLUUDDRLRDDDLUDDUDDLURLDULRUDLDDULURDUDRDRRRUULDDULUUUUUUULDUURUDURLURDDRRUDRDRRUDLLDDRLURDRLDLURLLRUUDRURDRDRLLDDULULRLDUUDDDLDURRDURUDRLLULRDURDLURRLLLURRULDUUDDDLUURRURDUDLLLLDURDUDURDURRLRDDLDDRLRURRRRRLLLLRUULDDRRUULUDR...

result:

ok Valid Solution (Length = 7980).

Test #59:

score: 0
Accepted
time: 895ms
memory: 25468kb

input:

13 20
11011101111111110111
11111110111010111111
11111111111101011101
10111010101111111010
01011101111111010111
10101011101110101110
01111101010101011111
11111011111110101011
11110111111111011111
11111010101011101011
01111111110101011111
10111010101011111110
11111111110111011101
12 16 1 20

output:

-1

result:

ok No Solution.

Test #60:

score: 0
Accepted
time: 34ms
memory: 44284kb

input:

20 20
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
...

output:

LLULLUUURRUDDLDRDDLDUURRDRDLRRDUDLDLDUDUUURRULURUUDUUUURUDRLRDDDLLUDUURDRRRDRLLUURRRLRRDLLDDURULRDUULRDLDUUUURURUUURULRUUULDDUDRUUUUUULDDULDDLRRDRDUURUDUURRDDRRDDRLURDRLRLURLLRDRDRRDDRDRRRRDULULRLULDDUUDDLRLDULUDRULRLLRDLDRUDDRRLLUUUDLRDRRDRUURRDLDUDRRLLDURULLLRUDRDRURURDDRLLRRULLLLLLLRUULDDRRUULUDR...

result:

ok Valid Solution (Length = 12694).

Test #61:

score: 0
Accepted
time: 8ms
memory: 33832kb

input:

20 20
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
11111111111111111111
10101010101010101010
...

output:

LLULLUUURLLDRRUDRDLDUURRDLDLLRRUDLDLDUDDDDRLUULRURULRRRLLRURLDRDRLRULDURRRLLLRRRURRLRDLULRLRUDDUULLRLURDDDUUULURUDULDULRRRLDUDDRUUUUUULDURUUDLRRULDRRRUDLDRRUDLLDDRLULDUDDLURLLRDLDRRDDRDRRRRDULULRLULDDUUDDLRLDULUDRULULRDRRDRURRRULURRULDUUDDDRUURDDRDRLURLRUUDRRRRDDDRRLLRRURDUUULRRRRRRLLLRUULDDLUDRLDDR...

result:

ok Valid Solution (Length = 7332).

Test #62:

score: 0
Accepted
time: 3ms
memory: 25220kb

input:

20 20
11111111111111111111
10000000000000000000
11111111111111111111
00000000000000000001
11111111111111111111
10000000000000000000
11111111111111111111
00000000000000000001
11111111111111111111
10000000000000000000
11111111111111111111
00000000000000000001
11111111111111111111
10000000000000000000
...

output:

LLUUUDRDUUDULRRLDUUDRRLLDDDLLRRUDLDLDRLULDRLLLURULUURDRLDURLRDRUUUULRURLLLLDRLDUDRUUUUUDDLDLULRLLRLDDLRDLUUDDUULUDURUULLULLDDUDRUDRURUUDRULLLRRLDURULDURLDUDLDRDRULRDLDRLLRDUUDURDLURDLUDURDUDLLUUDDUUDRDUUDUDDLDRRULDDRLULLDRDLDRURLUDLUDDRRURULDLLULRDLLURRDURDRLRLDUUDDUDRRRDRRLRUDLDLURLRLURRLDUUDLLRDUR...

result:

ok Valid Solution (Length = 31384).

Test #63:

score: 0
Accepted
time: 3ms
memory: 23564kb

input:

20 20
11110100001010101100
10110001101110101000
01011110111010110000
10111001001011011100
00110111011000010101
01001111110001010010
00101001010111010111
10110100100010001000
10101010001110000010
01111111010110101011
00100101001111000101
00110001001001111000
10101110010001000010
00000100010000110000
...

output:

-1

result:

ok No Solution.

Test #64:

score: 0
Accepted
time: 12ms
memory: 33572kb

input:

20 20
11010001010100101010
11111111111111111111
11000010111011001011
11111111111111111111
10010100111100111110
11111111111111111111
11101100001110000111
11111111111111111111
11010100111101000011
11111111111111111111
11010011111100110100
11111111111111111111
10001011110000111010
11111111111111111111
...

output:

LLDLRUDDLRURRLULDDLDDUDRDLDDDLDULRDURLRDDRDLDLURDURLDDURUDRLRDDDLLLRLLDDRRLLLLUDULRLRRRUDDDRUDDDULDLLUDULDURUULUDRUDDLRUURLLURLDLDURRRLULDRDRLUDDLDLRDRRLULRRURRDLULUDRRLUDDDDLUUUDLUDUDLLRURURRUDLRDDRDUDULLRLLUUUDRRDUDRDUUDDLURLLLLRRULDDUURULLURDRRDRLLUUURDRDLLLRUDRDLLRRDRDUUULDURRRRLRLLDDRDUULUURDUR...

result:

ok Valid Solution (Length = 11334).

Test #65:

score: 0
Accepted
time: 30ms
memory: 39332kb

input:

20 20
11111111111101111111
11111111111111111101
11111110111110111111
11111011110111111111
11010010110111111011
11111111111111101111
11111111111111111111
11111111111111111001
11111111011110111111
11111111111111111101
11101011111111111111
11111110111111101111
11111111111111111101
10111111111111100111
...

output:

LLULLUUURLLDRLDLDDLDUURRDLDLLRDUDLDLDUDDDDRLDRUDUULDRUULUDRRLDUUUUULLDUURLLURLLUDDLLLUUDURDRUDDLURLDULRUDRUDDLURUUDRULDRUULUUULDURDRUURDUURUDLRLDRDUUDDDRDRRUDLLDURLURDRLDRUULRLUUDRRDDRDRLLLDULURRLULDRURDDDRLDULUDDRLDLRDDURRURRLLLURLULDUUDDDRULRLLRDRLDRLRUDRRLRLDUURRLRUURDUUDUURLLLLLLLLRUDUDDLUDRLDDR...

result:

ok Valid Solution (Length = 7534).

Test #66:

score: 0
Accepted
time: 901ms
memory: 36204kb

input:

20 20
11010111110101010101
10111010101111101010
11111101111101110111
10101011111010101110
11111111110101111101
10111111111010101111
11110101010111111101
10111110101011101111
01110111011101111101
10111011101010111010
11010111011111010111
11111011101011101111
01010111011111011111
11111010111110111011
...

output:

-1

result:

ok No Solution.

Test #67:

score: 0
Accepted
time: 131ms
memory: 98352kb

input:

30 25
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
1111111111111111111111111
11111111...

output:

LLULLUUURLLDRLDLDDLDDUDRDLDLLRRDLRDLDUDDDDRLDLURLDLLRRUDLLLLLUDRLRLUDRUDLLLDRLLUDDRLRDURLUDLDDRLLRLDLURUDLDRULURRUURULRUUULDDUDRLDULUULDUURUDULLDRDUURUDUURRDDRRDDRLULDUDDLURDRRURDRRDDRDRRRRDULDLRLURUDDUDLDRLDULUDRUDDURURRDRURRRRLLURULDDRRLDLUULDDLDUDLLLLDURULLLRUDRDRURULDDLLLRRULLLLLLLRUULDDRRUULUDR...

result:

ok Valid Solution (Length = 28390).

Test #68:

score: 0
Accepted
time: 79ms
memory: 69576kb

input:

30 25
1111111111111111111111111
1010101010101010101010101
1111111111111111111111111
1010101010101010101010101
1111111111111111111111111
1010101010101010101010101
1111111111111111111111111
1010101010101010101010101
1111111111111111111111111
1010101010101010101010101
1111111111111111111111111
10101010...

output:

LLRRRUUULLUDDLDLDDLDUURRDLDLLRRUDLDLDUDDDDRLDLURUUDUUUULUDRLRUDRLRLUDRUDLLRRUDLLLRUDUUUDURDRUDDLURLDULLLDDULULURUUURULRUUULDDUDRUUUUUULDUURUDULLDRDUURUDUURRUDLLDDRLDRDUDDLURLLRDLDRRDDRDRRRRDULDLRLULDLDRLLDRLDULUDRUDDURUUUDDLRRRRLLURLRRRUDLDRUURDDRDUDRRLRUUDLLLLRUDRDLLRRDDDRLRURLURRRLRLLDUDDDLUDRLDDR...

result:

ok Valid Solution (Length = 22736).

Test #69:

score: 0
Accepted
time: 36ms
memory: 44596kb

input:

30 25
1111111111111111111111111
1000000000000000000000000
1111111111111111111111111
0000000000000000000000001
1111111111111111111111111
1000000000000000000000000
1111111111111111111111111
0000000000000000000000001
1111111111111111111111111
1000000000000000000000000
1111111111111111111111111
00000000...

output:

LLULLUULRRULDDDLDURDUDLURLURDURDLRDRDRLULURRDDULUUDDRURLUDRLRURDDDDLRDRDUDDRRLLDRUDDDRRDDLURRDLRDRLLRDRDLLUDLRDRURRRUULDLDDRULRDRDUDLLRDRRRULRUURRDRRRUDDULUDLURRDLRULLUURLDLRDLLLULULURULLDLLULUULRRLDLDLRDLDDLDRURULRDDLUDUDUDRULDDRRRDDLURDRRULDRURRUDDLDDDRRDLRLRRRDLDDDULLDULRLDLDLULDDDDRDRLULRDULRRDR...

result:

ok Valid Solution (Length = 220456).

Test #70:

score: 0
Accepted
time: 38ms
memory: 51216kb

input:

30 30
011110110001111010011111110010
011101110110100110001101010100
100100100111010000000011100101
111110001011110110101000100000
100110011100000111100111100010
110011101000111000101110011101
011000001101110100001010011100
001101101010010100111111110011
100010111001110111010110100001
000101010010110...

output:

-1

result:

ok No Solution.

Test #71:

score: 0
Accepted
time: 128ms
memory: 86448kb

input:

30 30
101011111010110011011100010111
111111111111111111111111111111
101000010010011000101010010010
111111111111111111111111111111
101010011110010001011010010101
111111111111111111111111111111
111100010110101001000001000001
111111111111111111111111111111
111101000101101001001000100001
111111111111111...

output:

LLULLUUURLLDRLDLDDLDUURRDLDLLRRDLRDLDUDDUURLUULRUULLRUULUDRLRUDDLLRRLLUDRDLURLLDDRRLRUUDURDRUDDLURLDULRDRRUDULULUUURULRRDUDRDUDRUUUUDUDDURLUDULLDRDDRRUDLDURLDDUUDLLULDUDDLURDLLUUDRRDDLDLRULDDDULRLULDDUUDDRRUDDUUDRRLDLRDUUDDLRRRRLLURULDDRRRDRUURUURUULURLRDURRLLLRDDRRLRDURUUULRURRRLLLLLLRUULDDLUDRLDDR...

result:

ok Valid Solution (Length = 56878).

Test #72:

score: 0
Accepted
time: 193ms
memory: 116732kb

input:

30 30
111111111111111101111111011011
111111100111011111111111101010
111111111111111111111111011111
111111111101111111110111111110
111111111111111011111111111111
111110111111111111111111011111
111111111111111111111111111011
111101111111011111111111111111
111111111111111111111111111111
101110111110111...

output:

LLDLLUUURRUDDLDRDDRDUURRDLDLURLLRRURRDLDUULLDLURUUDUUUULUDRLRUDRLRLUDRUDLLRRUDLLLRUDUUUDURDRUDDLULLRLURUDLDDUDLRURDRDLRUURDRDUDRUUUUUULDUURUDULLDRDUUUUDUURRUDLLDDRLDRURLDLULLRLUUDRRDDRDRRRRDULULRLULDDUUDDLRLDULUDRRLDLRDURDRDRRRRLLURULDDRRRDRUURDDRDUDRRLRUUDRLRLDRDRRLRUULDURLRDRRURRRLLLRUULUULUDRLDDR...

result:

ok Valid Solution (Length = 74334).

Test #73:

score: 0
Accepted
time: 899ms
memory: 84744kb

input:

30 30
110111011111110111011111110101
101110101010111010101011101010
011101111101011101011111010111
111110101110111111111011101110
010101110101011101010101111111
101111101011111111111110101011
111101110111010101011101010101
111011111010101010101010101111
011111011111110101011111111101
111010101111101...

output:

-1

result:

ok No Solution.

Test #74:

score: 0
Accepted
time: 99ms
memory: 74660kb

input:

21 30
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111...

output:

LLULLUUURLLDRURLDDURURRRDLDLLRRUDLDLDUDDDDRLDLURLDLLRRUDLLLLLUDRLRLUDRUDLLLDRLLUDDRLRDURLURUDDUDLLRRLULUUDRUULURUUURULRUUULDDUDRLDULUULDUURDDULUDRDDRRUDLDRRDDRRDDRLULDUDDLURDRRURDRRDDRDRRRRDULULRLULDDUUDDLRLDULUDRULRLLRDLDRUDDRRLLUUUDLRDRRDRUURRDLDUDRRLLDURULLLRUDRDRURURDDLLLRRULLLLLLLRUULDDRRUULUDR...

result:

ok Valid Solution (Length = 19688).

Test #75:

score: 0
Accepted
time: 45ms
memory: 53940kb

input:

21 30
111111111111111111111111111111
101010101010101010101010101010
111111111111111111111111111111
101010101010101010101010101010
111111111111111111111111111111
101010101010101010101010101010
111111111111111111111111111111
101010101010101010101010101010
111111111111111111111111111111
101010101010101...

output:

LLUUUDRDRRLRUDDLDRLLUURLLLDLLDDUDLUDDUDDDURLULURUUDUUUULRDUDUUDRLRLUDRUDLDURUDLDRRRLRDURLUDLDDRLLRLDLURUDLDRUDLUUUURULRUUULDDUDRUUUUUULDUURUDULLDRDUURUDDULUUDRLUURLURDLRUULDLRLDUURRDDRDLULULUDLRUULRDUDLRDLULDURRDDUDDLRDURDRURRRRLLURUULDUURDRUDRDDRDUDRRLRUUDLLLLRUDRDLLRRDDDRLRURRRRRRLRLLDUDDDLUDRLDDR...

result:

ok Valid Solution (Length = 18558).

Test #76:

score: 0
Accepted
time: 18ms
memory: 37140kb

input:

21 30
111111111111111111111111111111
100000000000000000000000000000
111111111111111111111111111111
000000000000000000000000000001
111111111111111111111111111111
100000000000000000000000000000
111111111111111111111111111111
000000000000000000000000000001
111111111111111111111111111111
100000000000000...

output:

LLUUUDRDUUDULRRLDUUDRRLLUUULLRRULRDDLDRLLLRLDLURULDLRLULUDLLLURRLRLLRRDDRLRUDULDDLRLRDUUDRRDLDLLURLLLUDRRRRUDDURUURUDUDDRULDUDDLUDRRDDURDULUDDDULLLULRUDDULUDLRDRDLRULDRLLRDUUDURULURULUDURUDULLUULLDDLDLRLLDLLDRRRRDLRRLUDRDLURDLLLRRDRRLDLUDLLURDLULURRLDUUUDURDDDDULLULRLLURDRRLRUDLDLURLRLURRLDUUDLLRDUR...

result:

ok Valid Solution (Length = 76268).

Test #77:

score: 0
Accepted
time: 27ms
memory: 45284kb

input:

25 30
011010010110010101001110110111
000011111001111101110011010001
011011100010011000110100110000
001111001100100010111111101001
000101111100111001000000001111
001010110011101110101000010000
001010011001010000011001001001
011111010111110110101001110000
011001010011100010100101011000
100011000011110...

output:

-1

result:

ok No Solution.

Test #78:

score: 0
Accepted
time: 89ms
memory: 66876kb

input:

25 30
101100000100000111111100110011
111111111111111111111111111111
100111110101001111010001110011
111111111111111111111111111111
101101100110111111011110101110
111111111111111111111111111111
111001000110101100010101000110
111111111111111111111111111111
100000001011110010001101011010
111111111111111...

output:

LRULRUUURRUDDLRLDLLDUURRDRDLRLDUDLDRUULRDURRUUURULRLDLURUDRRLRDUUUUDDULULLLDRRDURDLRRURRLUDDULRLLUDDRURUDDRDRLURUUDDDRLLUULDDUDRUUUDURLDDULUDULLDRUURLUDLDRLUDRRDLULRUDDULRURLDRDURRRDDRULURRDULULRLULDDUUDDLRRDURUDDRLDLRDDURRURRRRLLDRULDDUDRDRUULDDRDUDRRLLUUDLLLLRDDRRLRUULDURLRURRRRRRLLLRUULUURUDUDDDR...

result:

ok Valid Solution (Length = 26408).

Test #79:

score: 0
Accepted
time: 128ms
memory: 90408kb

input:

25 30
111111101111111111111111111111
111111111111111101111111110111
111111111111101111111111111111
111111111111111101101111111111
011101111111111111111111101111
111011100111111110111110111111
111111110111111111111111111111
111111111111110111111111111111
111111111111111101111111111111
111111111111111...

output:

LLDLLUUURLLDRLDLDDLUUURRDLDLUDUULRDRDUDDDURLULURUUDUUUULDDUDUUDDLLRRLLUDRDLDRLLUDRRLRDURLUDLDDLLURDDLUDLUUUDDUULLUURULRRUDURDLRDUDDUUDUDRDRUDLRLDRDDRRDDLDRRUDLLDDRLULDUDDRURLURURRRRUURDRRRRRUDRLRLULDDUUDDRRLDULRDDRLDLRDURDRULLLLLURRULDDUURDUUDRDDRDUDLLLLLULRLRLDDDRRLRDULDDLLLRRULLLLLLLRUULDDLUDRLDDR...

result:

ok Valid Solution (Length = 50954).

Test #80:

score: 0
Accepted
time: 895ms
memory: 71572kb

input:

25 30
110101110101011111010101010111
101111101011111011111110101010
110111011101110111111101011101
101011111011101011111111111011
110111111101011111110111111111
111111111110101011111111101010
110101010101010101011111011101
101010111010101111111111101111
111101110111011101011111010111
101010101010111...

output:

-1

result:

ok No Solution.

Test #81:

score: 0
Accepted
time: 205ms
memory: 127952kb

input:

30 30
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111...

output:

LLULLUUURLLDRURLDDURURRRDLDLLRRUDLDLDUDDDDRLDLURLDLLRRUDLLLLLUDRLRLUDRUDLLLDRRUUDDRLRUUDURDRUDULURLDULRDRRUDULURUUURULRUUULDDUDRLDULUULDUURUDULLDRDLRUUDURDDRURRDDRLULRUDDULDURRUUDRRDDRDRRRRDULULRLULDDUUDDLRLDULUDRULRLLRDLDRUDDRRLLUUUDLRDRRDRUURRDLDUDRRLLDURULLLRUDRDRURURDDRLLRRURRRRLLLRUULDDRRUULUDR...

result:

ok Valid Solution (Length = 50866).

Test #82:

score: 0
Accepted
time: 100ms
memory: 86812kb

input:

30 30
111111111111111111111111111111
101010101010101010101010101010
111111111111111111111111111111
101010101010101010101010101010
111111111111111111111111111111
101010101010101010101010101010
111111111111111111111111111111
101010101010101010101010101010
111111111111111111111111111111
101010101010101...

output:

LLULLUUURLLDRLUURDLRDUULDDUUUDURLURLLULRRDRLDLUDURDDLUDLUDRRRUURDLUDUULDRRLLLRRRURRLRDURLUDLDDRLLRLDLURUDLDRUDLUUULRDUUDDDLDDUDRUUUUUUUDDRRUDULLDRDUURUDUURRUDRLUURLURDLRUULDLRLDUURRDDRDLULULUDLRUULRDUDLRDLULDURRDDUDDLRDURDRURRRRLLURUULDUURDRUDRDDRDUDRRLRUUDLLLLRUDRDLLRRDDDRLRURRRRRRRRRLDUDDDLUDRLDDR...

result:

ok Valid Solution (Length = 32364).

Test #83:

score: 0
Accepted
time: 50ms
memory: 53452kb

input:

30 30
111111111111111111111111111111
100000000000000000000000000000
111111111111111111111111111111
000000000000000000000000000001
111111111111111111111111111111
100000000000000000000000000000
111111111111111111111111111111
000000000000000000000000000001
111111111111111111111111111111
100000000000000...

output:

RLUUUDRURRURRLUURDRDUUDRDLDDDLDUURDDURUDDLRRDDRDUUDUUDLDUURDLLRUDUDRRUURLRLRRRUDDDUDURDRURDRUDDDULDUDDRLDURUDULUULUDRLURRUULDLLURURRUDRDLULDRRUDRDURULDUUDRURDURDRRLURDRLDLURLURULDRLURUDDRRRDUDRLRLUURDLLLDLRLDLUDRRUULRRUDUDUDLDRDDLUDLRUDURURULLLDULDUURRLRULLDDDDURULLLLRRDRRRLRRRRRRRRLLLRURLDLRUDLRRDU...

result:

ok Valid Solution (Length = 281356).

Test #84:

score: 0
Accepted
time: 56ms
memory: 53332kb

input:

30 30
010110110101101010000010000110
101110000111000001001111100101
010100011111100110100001111101
101101100010111011011010001010
100101010100001011101100101100
101001111001111101101100001110
000111101010011110100001110100
111111001101000001011110000111
010000100010000100000011101000
100001010111010...

output:

-1

result:

ok No Solution.

Test #85:

score: 0
Accepted
time: 131ms
memory: 86304kb

input:

30 30
100110101011111011001000111100
111111111111111111111111111111
101001000111011110000110011110
111111111111111111111111111111
111001111110100011111000000010
111111111111111111111111111111
100111001001100000100010001101
111111111111111111111111111111
110001101000111011111010110110
111111111111111...

output:

LRDLRURURRUDRLDULDLDUURLLRUUULURRRDDDUDDDDRLDLURUUDUUUULUDRLRUDRLRLUDRURRRLLLRRRURRRLDURRUDDULULULLRRLDUUDDDUDLRUUDRDLRRUDURDDLUDRUDRULLUURDDLRLDUDDUUUDULRURULUDLRLULDUDUUULRDRUUDRRUURDRRRRUUDUDUURRDLDLLDURLULUUDDRLULRUUURUULLLLLURRULDDUDRDRDURDDDDULURLRDURRLRLDDDRRLRDDRDDRLRURRRRRRLLLRDDLDDLUDRLDDR...

result:

ok Valid Solution (Length = 35612).

Test #86:

score: 0
Accepted
time: 185ms
memory: 116536kb

input:

30 30
111101111111111111111011111111
100111111111111111111111011111
111111011111111111011111111110
101111111101111111111111111111
111111111111111111111111111111
111111101111011111111110111111
111011111111111111111111111111
111111111111111111111101111111
111111111111111111111111111111
011111100111111...

output:

LLULLUUURLLDRLDLDDLDUURRDLRLRDDUDRDLDUDDDDRLDLURUUDUUUURUDRLRDDDLLUDUURDRUDDLLUUDDRLRDUULUURUDDLLURUDLDRRURDUDLLUURRULRUUULDDUDRLDULUULDUURUDULLDLUURRUDUULLUDLRLDRLULDUDDLURDRRURDRRDDRDRLLLDULULRLULDDURLLDRURRUUDRLLULRDRLDLDLLLLLURLDLDUUDDDRUUDDLDDUDRLLLDURULLLRDDRRLRDULDDRLRULLLLLLLLLRUULDDRDUULDDL...

result:

ok Valid Solution (Length = 44108).

Test #87:

score: 0
Accepted
time: 107ms
memory: 83844kb

input:

30 30
011111010101111111011101111101
111011101011111110111111101011
111111010101011101111101110101
111110101011101110111111101110
010111011101110101110101111101
101111101011101110101010111111
110101010101010111011101010101
101110101111101110101110111111
110111011101010111010111110101
101011111110111...

output:

-1

result:

ok No Solution.

Test #88:

score: 0
Accepted
time: 173ms
memory: 128200kb

input:

30 30
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111111111111111111
111111111111111...

output:

LLULLUUURLLDRLDLDDLDUURRDLDLURLLLRDLUULRDURLULURUUDLRRULLDLLLUDRLRLUDRUDLLLDRLLUDDRLRUUDURDRUDULURLDULRDRRUDULURUUURULRUUULDDUDRUUUUUULDUURUDLRLDRDUUDDDLDRRUDLLDDRLULDUDDLURDRRURDRRDDRDRRRRDULDLRLURUDDUDLDRLDULUDRUDDURURRDRURLLLLURLULDUUDDDRULULDRDLLURRDRDDLLLLRUDRULLRRUUURLRULLLLLLLLLRUULDDRRUULUDR...

result:

ok Valid Solution (Length = 30104).

Extra Test:

score: 0
Extra Test Passed