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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#256160#7751. Palindrome Pathucup-team1198#AC ✓99ms130092kbC++204.8kb2023-11-18 17:56:562023-11-18 17:56:57

Judging History

你现在查看的是最新测评结果

  • [2023-11-18 17:56:57]
  • 评测
  • 测评结果:AC
  • 用时:99ms
  • 内存:130092kb
  • [2023-11-18 17:56:56]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;
#define ll long long
#define pii pair<int, int>
#define ld long double
#define all(a) (a).begin(), (a).end()

const int MAXN = 35;
const int MAXM = MAXN * MAXN * MAXN * MAXN;
int table[MAXN][MAXN];

vector<pair<int, char>> G[MAXM];

int n, m;

int go_x[4] = {1, -1, 0, 0};
int go_y[4] = {0, 0, 1, -1};
char letters[4] = {'D', 'U', 'R', 'L'};

bool used[MAXM];
bool is_cool[MAXM];

string cringe[MAXM];

string get_path(int v, int u) {
    fill(used, used + n * m, false);
   
    deque<int> Q;
    int s = v * n * m + u;
    vector<int> par(n * m * n * m, -1);
    vector<char> par_c(n * m * n * m, -1);
    Q.emplace_back(s);
    par[s] = s;
    int t = -1;
    while (!Q.empty()) {
        int v = Q.front();
        Q.pop_front();
        if (is_cool[v]) {
            t = v;
            break;
        }
        for (auto [u, c] : G[v]) {
            if (par[u] == -1) {
                Q.emplace_back(u);
                par[u] = v;
                par_c[u] = c;
            }
        }
    }
    assert(t != -1);
    string tmp = cringe[t];
    string kek;
    while (t != s) {
        kek += par_c[t];
        t = par[t];
    }
    string ans_end = kek;
    reverse(kek.begin(), kek.end());
    return kek + tmp + ans_end;
}

bool used_table[MAXN][MAXN];
string dfs_line;

void dfs_table(int x, int y, int &sx, int &sy) {
    used_table[x][y] = true;
    for (int step = 0; step < 4; ++step) {
        int x1 = x + go_x[step];
        int y1 = y + go_y[step];
        if (table[x1][y1] == 1 && !used_table[x1][y1]) {
            dfs_line += letters[step ^ 1];
            sx -= go_x[step];
            sy -= go_y[step];
            if (table[sx][sy] == 0) {
                sx += go_x[step], sy += go_y[step];
            }
            dfs_table(x1, y1, sx, sy);
            dfs_line += letters[step];
            sx += go_x[step];
            sy += go_y[step];
            if (table[sx][sy] == 0) {
                sx -= go_x[step], sy -= go_y[step];
            }
        }
    }
}

void solve(int sx, int sy, int ex, int ey) {

    auto get_coords = [](int x, int y) {
        return (x - 1) * m + y - 1;
    };
    for (int i = 0; i < n * m * n * m; ++i)
        G[i].clear();

    vector<pair<int, int>> good;
    for (int i = 1; i <= n; ++i) {
        for (int j = 1; j <= m; ++j) {
            if (table[i][j] == 1)
                good.emplace_back(i, j);
        }
    }

    for (auto [i, j] : good) {
        for (auto [k, l] : good) {
            for (int step = 0; step < 4; ++step) {
                int i1 = i + go_x[step];
                int j1 = j + go_y[step];
                if (table[i1][j1] == 0)
                    i1 = i, j1 = j;
                int new_first = get_coords(i1, j1);
                if (table[k + go_x[step]][l + go_y[step]] == 0) {
                    int new_second = get_coords(k, l);
                    G[get_coords(i, j) * n * m + get_coords(k, l)].emplace_back(new_first * n * m + new_second, letters[step]);
                }
                if (table[k - go_x[step]][l - go_y[step]] != 0) {
                    int new_second = get_coords(k - go_x[step], l - go_y[step]);
                    G[get_coords(i, j) * n * m + get_coords(k, l)].emplace_back(new_first * n * m + new_second, letters[step]);
                }
            }
        }
    }

    fill(is_cool, is_cool + n * m * n * m, false);

    for (auto [i, j] : good) {
        for (auto [k, l] : good) {
            if (abs(i - k) + abs(j - l) == 0) {
                is_cool[get_coords(i, j) * n * m + get_coords(k, l)] = true;
                cringe[get_coords(i, j) * n * m + get_coords(k, l)] = "";
            } else if (abs(i - k) + abs(j - l) == 1) {
                is_cool[get_coords(i, j) * n * m + get_coords(k, l)] = true;
                cringe[get_coords(i, j) * n * m + get_coords(k, l)] = k == i + 1 ? "D" : (k == i - 1 ? "U" : (l == j - 1 ? "L" : "R"));
            }
        }
    }
    for (int i = 1; i <= n; ++i) {
        fill(used_table[i], used_table[i] + m + 1, false);
    }

    dfs_table(ex, ey, sx, sy);

    for (auto [i, j] : good) {
        if (!used_table[i][j]) {
            cout << -1 << '\n';
            return;
        }
    }
    string ans_st = dfs_line;
    reverse(dfs_line.begin(), dfs_line.end());
    string ans_end = dfs_line;
    string ans_mid = get_path(get_coords(sx, sy), get_coords(ex, ey));
    string ans = ans_st + ans_mid + ans_end;
    assert(ans.size() <= 1000000);
    cout << ans << '\n';
    // dfs_line + ? + ans_end
}


signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin >> n >> m;
    for (int i = 1; i <= n; ++i) {
        for (int j = 1; j <= m; ++j) {
            char c;
            cin >> c;
            table[i][j] = c - '0';
        }
    }
    int sx, sy, ex, ey;
    cin >> sx >> sy >> ex >> ey;
    solve(sx, sy, ex, ey);
    return 0;
}

这程序好像有点Bug,我给组数据试试?

详细

Test #1:

score: 100
Accepted
time: 8ms
memory: 88444kb

input:

2 2
11
11
1 1 2 2

output:

DRUDLUDRDULDURD

result:

ok Valid Solution (Length = 15).

Test #2:

score: 0
Accepted
time: 6ms
memory: 86404kb

input:

2 2
10
01
1 1 2 2

output:

-1

result:

ok No Solution.

Test #3:

score: 0
Accepted
time: 8ms
memory: 88432kb

input:

1 1
1
1 1 1 1

output:



result:

ok Valid Solution (Length = 0).

Test #4:

score: 0
Accepted
time: 7ms
memory: 88408kb

input:

5 4
1111
1111
1111
1111
1111
4 2 4 2

output:

ULDDDDLUUUUDDDDRRUURUUDDDDUULDDLUUUURDDLDDRUUUULDDLUUDDDDUURUURRDDDDUUUULDDDDLU

result:

ok Valid Solution (Length = 79).

Test #5:

score: 0
Accepted
time: 15ms
memory: 88528kb

input:

5 5
11111
10101
11111
10101
11111
1 4 5 5

output:

DDDDRRUUUULRRRDDDDLRUULRUULLDDLRDDLLUUUUDDRRRRRDDUUUULLDDRLDDLLUURLUURLDDDDRRRLUUUURRDDDD

result:

ok Valid Solution (Length = 89).

Test #6:

score: 0
Accepted
time: 11ms
memory: 88500kb

input:

5 3
111
100
111
001
111
4 3 3 2

output:

LUURRLLDDRRDDLLRRUULLUURRLLDDRRDDLLRRUUL

result:

ok Valid Solution (Length = 40).

Test #7:

score: 0
Accepted
time: 12ms
memory: 88416kb

input:

5 4
1001
1101
1111
0011
0010
2 2 1 1

output:

UULDULUUDLDDDUUURDRRDDULUDDRRDRUUUDDDLDUULUDLUU

result:

ok Valid Solution (Length = 47).

Test #8:

score: 0
Accepted
time: 16ms
memory: 88428kb

input:

5 3
101
111
100
111
100
4 1 2 2

output:

LDURRUUUDLLRRDDDULRUULLLUURLUDDDRRLLDUUURRUDL

result:

ok Valid Solution (Length = 45).

Test #9:

score: 0
Accepted
time: 11ms
memory: 88408kb

input:

5 5
01110
10110
11110
11011
11100
2 4 5 1

output:

DDDULUULRDDLDDLUUULRDDDRRLUURRUUDDLLLDDUURRUULRRDDDRLUUULDDLDDRLUULUDDD

result:

ok Valid Solution (Length = 71).

Test #10:

score: 0
Accepted
time: 3ms
memory: 88384kb

input:

5 3
011
111
110
111
011
3 1 2 1

output:

UULULDURDDDDLUDRUUURDDULULUDDRUUURDULDDDDRUDLULUU

result:

ok Valid Solution (Length = 49).

Test #11:

score: 0
Accepted
time: 4ms
memory: 88472kb

input:

4 5
11111
11111
11111
11111
3 2 1 3

output:

UUULDDDLUUUDDDRUUURRDDDRUUUDDDLUUULDDDUUUDDDLUUULDDDUUURDDDRRUUURDDDUUULDDDLUUU

result:

ok Valid Solution (Length = 79).

Test #12:

score: 0
Accepted
time: 3ms
memory: 88448kb

input:

5 5
11111
10101
11111
10101
11111
2 5 1 1

output:

UUUULLDDDDLLUUUURLDDRLDDRRRLUURLUURRDDDDUULLLLLUUDDDDRRUULRUULRRRDDLRDDLRUUUULLDDDDLLUUUU

result:

ok Valid Solution (Length = 89).

Test #13:

score: 0
Accepted
time: 7ms
memory: 88448kb

input:

4 5
11111
10000
11111
00001
1 3 4 5

output:

DRRRRDDLLLLRRRRUULLLLUDDRRRRRDDULLLLUURRRRLLLLDDRRRRD

result:

ok Valid Solution (Length = 53).

Test #14:

score: 0
Accepted
time: 8ms
memory: 88412kb

input:

3 5
10100
00010
00111
1 3 1 1

output:

-1

result:

ok No Solution.

Test #15:

score: 0
Accepted
time: 8ms
memory: 88404kb

input:

4 5
10001
11111
11100
11111
4 5 3 1

output:

ULDDLUULLRRDDLLDURRRRDULUURDLLLDRUULUDRRRRUDLLDDRRLLUULDDLU

result:

ok Valid Solution (Length = 59).

Test #16:

score: 0
Accepted
time: 11ms
memory: 88464kb

input:

3 5
11111
10100
11111
1 2 3 5

output:

RRDDLLRRRRUULRDDLLUULLRRDDDRRLLUULLDDRLUURRRRLLDDRR

result:

ok Valid Solution (Length = 51).

Test #17:

score: 0
Accepted
time: 11ms
memory: 88460kb

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: 88464kb

input:

5 5
11111
11111
11111
11111
11111
1 3 5 2

output:

DDDDLUUUULDDDDLUUUUDDDDRUUUURDDDDRRUUUUDDDDLUUUUDDLDLDDUUUULDDDDUUUURRDDDDRUUUURDDDDUUUULDDDDLUUUULDDDD

result:

ok Valid Solution (Length = 103).

Test #19:

score: 0
Accepted
time: 7ms
memory: 88488kb

input:

5 5
11111
10101
11111
10101
11111
5 1 2 3

output:

UUULLDDDDRRRRUUUULRDDLRDDLLLLUURLUURRDDDUUDDDRRUULRUULLLLDDRLDDRLUUUURRRRDDDDLLUUU

result:

ok Valid Solution (Length = 82).

Test #20:

score: 0
Accepted
time: 11ms
memory: 88472kb

input:

5 5
11111
10000
11111
00001
11111
4 5 5 3

output:

LLDDRRRRDDLLLLRRRRUULLLLUURRRRLLLLDDRRRRRDDLLLLRRRRUULLLLUURRRRLLLLDDRRRRDDLL

result:

ok Valid Solution (Length = 77).

Test #21:

score: 0
Accepted
time: 8ms
memory: 88428kb

input:

5 5
01010
10101
10101
11001
10011
4 1 5 4

output:

-1

result:

ok No Solution.

Test #22:

score: 0
Accepted
time: 3ms
memory: 88432kb

input:

5 5
10101
11111
10101
11111
11111
3 1 2 4

output:

LUUURDRURDRUDDDDULLUDDURRUULULDLULDDDDURRUURRUDDDDLULDLULUURRUDDULLUDDDDURDRURDRUUUL

result:

ok Valid Solution (Length = 84).

Test #23:

score: 0
Accepted
time: 17ms
memory: 88416kb

input:

5 5
00001
11111
01110
01111
01111
1 5 5 2

output:

DDDLUUULDDDLDURUULUDRURDDDRRLUUUDLDLDUUULRRDDDRURDULUURUDLDDDLUUULDDD

result:

ok Valid Solution (Length = 69).

Test #24:

score: 0
Accepted
time: 12ms
memory: 88504kb

input:

5 5
01011
10111
11011
10101
01110
4 1 2 3

output:

-1

result:

ok No Solution.

Test #25:

score: 0
Accepted
time: 11ms
memory: 88712kb

input:

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

output:

UUUUUUULDDDDDDDDDLUUUUUUUUUDDDDDDDDDRRURUUUUUUUURDDDDDDDDDLRRUUUUUUUUURDDDDDDDDDRUUUUUUUUUDDDDDDDDDLUUUUUUUUULDDDDDDDDDLUUUUUUUUULDDDDDDDDLDLUUUUUUUUURDDDDDDDDDUUUUURRRUUUUUDDDDDDDDDRUUUUUUUUULDLDDDDDDDDLUUUUUUUUULDDDDDDDDDLUUUUUUUUULDDDDDDDDDUUUUUUUUURDDDDDDDDDRUUUUUUUUURRLDDDDDDDDDRUUUUUUUURURRDDD...

result:

ok Valid Solution (Length = 333).

Test #26:

score: 0
Accepted
time: 14ms
memory: 88544kb

input:

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

output:

UUUUUUUUDLLUDDDDDDDDDLRRRRRUUUUUUUUUDLRDDLRDDLRDDLRDDLLLLUULRRLUULRRLUULRRLUULRRRDDDDDDDDLDDDDDDDDRRRLUULRRLUULRRLUULRRLUULLLLDDRLDDRLDDRLDDRLDUUUUUUUUURRRRRLDDDDDDDDDULLDUUUUUUUU

result:

ok Valid Solution (Length = 179).

Test #27:

score: 0
Accepted
time: 11ms
memory: 88696kb

input:

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

output:

LLLLLLLLDDRRRRRRRRRDDLLLLLLLLLRRRRRRRRRUULLLLLLLLLUURRRRRRRRRUULLLLLLLLLUURRRRRRRRRUDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDURRRRRRRRRUULLLLLLLLLUURRRRRRRRRUULLLLLLLLLUURRRRRRRRRLLLLLLLLLDDRRRRRRRRRDDLLLLLLLL

result:

ok Valid Solution (Length = 223).

Test #28:

score: 0
Accepted
time: 8ms
memory: 88544kb

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: 7ms
memory: 88552kb

input:

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

output:

UUULDDLDDDDLUUDDDDRRDURRRUUUUUUUULDDUURDDDDLLDDLUUDDRRLUURRDDDDDULLLLLUURUUUULRRUULLRRRDDDDRDRDRDDDDRRRLLUURRLUUUURUULLLLLUDDDDDRRUULRRDDUULDDLLDDDDRUUDDLUUUUUUUURRRUDRRDDDDUULDDDDLDDLUUU

result:

ok Valid Solution (Length = 187).

Test #30:

score: 0
Accepted
time: 12ms
memory: 88696kb

input:

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

output:

DLUUUUUUUUULLLDDDDDDDLUUULULUURURDDUULDLDDDDDDDRUDDRUDRRUUUUUUUDRDULDDDRDDDUUULDDDLLLULUUUUURDRDDDRUUUUUUURRRRDDDDDDUUUUUULDDDDDDDDDRULLUULLLUULLURDDDDDDDDDLUUUUUUDDDDDDRRRRUUUUUUURDDDRDRUUUUULULLLDDDLUUUDDDRDDDLUDRDUUUUUUURRDURDDURDDDDDDDLDLUUDDRURUULULUUULDDDDDDDLLLUUUUUUUUULD

result:

ok Valid Solution (Length = 279).

Test #31:

score: 0
Accepted
time: 14ms
memory: 88656kb

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: 7ms
memory: 88760kb

input:

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

output:

UURDDDDDDDLUUUUDDDDRRUUUUUUURDDDDDDDRUUUUUUURDDDDDDDRUUUUUUURDDDDDDDRUUUUUUURDDDDDDDUUUUUUULDDDDDDDLUUUUUUULDDDDDDDLUUUUUUULDDDDDDDLUUUUUUULDDDDDDDLUUUUUUULDDDRRRRRDRRRRRDDDLUUUUUUULDDDDDDDLUUUUUUULDDDDDDDLUUUUUUULDDDDDDDLUUUUUUULDDDDDDDLUUUUUUUDDDDDDDRUUUUUUURDDDDDDDRUUUUUUURDDDDDDDRUUUUUUURDDDDDDD...

result:

ok Valid Solution (Length = 329).

Test #33:

score: 0
Accepted
time: 7ms
memory: 88716kb

input:

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

output:

UDDDDDDDDDLLUUUUUUUUUDLLUDDDDDDDDDLLUUUUUUUUUDLLUDDDDDDDDDLRRLUULRRLUULRRLUULRRLUULRRRRLDDRLDDRLDDRLDDRRRLUURLUURLUURLUURRRLDDRLDDRLDDRLDDRRUUUUUUUUDDDLDLLLDLDDDUUUUUUUURRDDLRDDLRDDLRDDLRRRUULRUULRUULRUULRRRDDLRDDLRDDLRDDLRRRRLUULRRLUULRRLUULRRLUULRRLDDDDDDDDDULLDUUUUUUUUULLDDDDDDDDDULLDUUUUUUUUULLD...

result:

ok Valid Solution (Length = 309).

Test #34:

score: 0
Accepted
time: 12ms
memory: 88632kb

input:

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

output:

LLLLLLLLUURRRRRRRRRUDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLRRRRRRRRRUULLLLLLLLLUURRRRRRRRRUULLLLLLLLLUURRRRRRRRRUULLLLLLLLLUURRRRRRRRRLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDURRRRRRRRRUULLLLLLLL

result:

ok Valid Solution (Length = 223).

Test #35:

score: 0
Accepted
time: 8ms
memory: 86400kb

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: 4ms
memory: 88460kb

input:

5 10
1001011101
1111111111
1000011001
1111111111
1101110010
4 3 4 7

output:

DDDLULLUURUDRLLDDDURRDRRUUUURDRUDRRURDDDDULLLDULRRRRUUULDLLLULDDDDLUUUDRDRRRRRDRDUUULDDDDLULLLDLUUURRRRLUDLLLUDDDDRURRDURDRUUUURRDRRUDDDLLRDURUULLULDDD

result:

ok Valid Solution (Length = 151).

Test #37:

score: 0
Accepted
time: 10ms
memory: 88568kb

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: 11ms
memory: 88720kb

input:

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

output:

UURDURRDDDLUDDDDDDRUUURUUUUUDRDDDDDDLUDDURRUUUUUUUDRRURDDDDDLULUDDURDDDDULRRLUURUUULRUULDLLDDDDDDDULUUUUUULDDDDLDDDLULUULUURLDDDDDUUURDDRUUUURUUULLLDDDRRDDRRDDDLLLUUURUUUURDDRUUUDDDDDLRUULUULULDDDLDDDDLUUUUUULUDDDDDDDLLDLUURLUUURUULRRLUDDDDRUDDULULDDDDDRURRDUUUUUUURRUDDULDDDDDDRDUUUUURUUURDDDDDDULDD...

result:

ok Valid Solution (Length = 308).

Test #39:

score: 0
Accepted
time: 8ms
memory: 88944kb

input:

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

output:

UUUUUUULDDDDDDDDDLUUUUUUUUULDDDDDDDDDLUUUUUUUUULDDDDDDDDDLUUUUUUUUULDDDDDDDDDLUUUUUUUUUDDDDDDDDDRUUUUUUUUURDDDDDDDDDRUUUUUUUUURDDDDDDDDDRUUUUUUUUURDDDDDDDDDRRURUUUUUUUUDDDDDDDDDULDLUUUUUUUUURDDDDDDDUURLLLLLULLLLLRUUDDDDDDDRUUUUUUUUULDLUDDDDDDDDDUUUUUUUURURRDDDDDDDDDRUUUUUUUUURDDDDDDDDDRUUUUUUUUURDDD...

result:

ok Valid Solution (Length = 413).

Test #40:

score: 0
Accepted
time: 4ms
memory: 88660kb

input:

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

output:

UUUUUUUUUDLLUDDDDDDDDDLLUUUUUUUUUDLLUDDDDDDDDDLRRLUULRRLUULRRLUULRRLUULRRRRLDDRLDDRLDDRLDDRRRLUURLUURLUURLUURRRRUDDDDDDDDDLRUULRUULRUULRUULLDDDDDDDDUUUUURRUUUUUDDDDDDDDLLUURLUURLUURLUURLDDDDDDDDDURRRRUULRUULRUULRUULRRRDDLRDDLRDDLRDDLRRRRLUULRRLUULRRLUULRRLUULRRLDDDDDDDDDULLDUUUUUUUUULLDDDDDDDDDULLDU...

result:

ok Valid Solution (Length = 308).

Test #41:

score: 0
Accepted
time: 12ms
memory: 88632kb

input:

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

output:

LLLLLUURRRRRRRRRUULLLLLLLLLUURRRRRRRRRUDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLRRRRRRRRRUULLLLLLLLLUURRRRRRRRRUULLLLLLLLLUURRRRRRRRRLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDURRRRRRRRRUULLLLLLLLLUURRRRRRRRRUULLLLL

result:

ok Valid Solution (Length = 239).

Test #42:

score: 0
Accepted
time: 7ms
memory: 88628kb

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: 8ms
memory: 88764kb

input:

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

output:

DLUDRURRDRUUUUULUULDDDDLLRRRUDLUULUUUULDDUURRRRDDRRUULRRRRDDDDDDDDDLUUULUUUURDDUULDLDLRURDDDDDDULLUURLDDDURRUURDDDRUUUUUUUUULLLDDLLUULLLDDDDLRRUURDDRDDDDDLULLRUUURRURURRUUURLLULDDDDDRDDRUURRLDDDDLLLUULLDDLLLUUUUUUUUURDDDRUURRUDDDLRUULLUDDDDDDRURLDLDLUUDDRUUUULUUULDDDDDDDDDRRRRLUURRDDRRRRUUDDLUUUULUU...

result:

ok Valid Solution (Length = 331).

Test #44:

score: 0
Accepted
time: 11ms
memory: 88860kb

input:

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

output:

ULUUUULDDDDDDDDLUUUUUUUDDLLUUURLDDDDURRDDLRDDLDDLRUULUDRRDRRUDDRURUUURUUUUULDDDULUUDDRUURRRDDDDDDLUUDDDLDDLRRRUDLLUURURUUUULRUULLDDDDDLDLRDDLDLULUUURLUUUUURDDDDRDRDDLLLDDRDRDDDDRUUUUULRUUULULDLDDRLDLDDDDDLLUURLUUUURURUULLDURRRLDDLDDDUULDDDDDDRRRUURDDUULUDDDLUUUUURUUURURDDURRDRRDULUURLDDLDDRLDDRRUDDD...

result:

ok Valid Solution (Length = 333).

Test #45:

score: 0
Accepted
time: 3ms
memory: 88704kb

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: 11ms
memory: 91212kb

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:

UUUUUUURDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUDDDDDDDDDDDRRUUUUUUUUUUUUUUUUUUURDDDDDDDDDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUURDDDDDDDDDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUURDDDDDDDDDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUURDDDDDDDDDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUURDDDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDLUUUUUUUUU...

result:

ok Valid Solution (Length = 973).

Test #47:

score: 0
Accepted
time: 11ms
memory: 91976kb

input:

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

output:

UUUUUUUUUUUUUUDLLUDDDDDDDDDDDDDDDDDDDLLUUUUUUUUUUUUUUUUUUUDLLUDDDDDDDDDDDDDDDDDDDLLUUUUUUUUUUUUUUUUUUUDLLUDDDDDDDDDDDDDDDDDDDLLUUUUUUUUUUUUUUUUUUUDLLUDDDDDDDDDDDDDDDDDDDLLUUUUUUUUUUUUUUUUUUUDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRRRLUURLUURLUURLUURLUURLUURLUURLUURLUURRRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDR...

result:

ok Valid Solution (Length = 1045).

Test #48:

score: 0
Accepted
time: 15ms
memory: 90604kb

input:

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

output:

LLLLLLLUURRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLUDRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRR...

result:

ok Valid Solution (Length = 800).

Test #49:

score: 0
Accepted
time: 12ms
memory: 89712kb

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: 12ms
memory: 92384kb

input:

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

output:

LUULLUULRRRUUUULUUUUUULLDDRDDDDLUUDDRUUUULUURRRUULLLRRRRRRDDLLRRRRUULRRRDDDDDDDDLUULUUUDLDDDDDDLUULUULUULUDDDUURRRDDUULLDDDDDDDDRUUUDDRDRDDDDDDDLULLDLULDLULUURUDRLLDDRDRURDRURRDRRURUUUUUULDDUURRDDDDRDDLDLRURRUURUUUULUULUURRDDRRRRUUUUUUUUUULDDLUULDDDDDDDDRUUUUUDRDDDDUUUULDDDDLUULLUUUULUURRLLDDRRLDDLR...

result:

ok Valid Solution (Length = 1123).

Test #51:

score: 0
Accepted
time: 21ms
memory: 92500kb

input:

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

output:

UUUUUUUUUULDDDDDLUUUUULDDDDLUUUULDDLDDDDDDDDDDDLUUUUUUUUUUULUULDDDDDDDDDDLUUUUDDDDDDDDDDDDDRUUUUUUURDDDDRUUDRDDDDLUUDLDURDRRUUURUUUUUUUUUUULUDDDDDDDDDDUUUUUUUUURDRDDDDDDDDDDDLDDRRRURUUUUUUULUUUUDLDURDDDDDLUUDDDDRLUURUURRUUURUULUUUUUURDDDDRUUUURDDDDDDDDDDLUUUDDDDLUDDDDDDDDLUUUUDDDDDLRURRUUUUURURUDDDD...

result:

ok Valid Solution (Length = 1169).

Test #52:

score: 0
Accepted
time: 14ms
memory: 91516kb

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: 11ms
memory: 92244kb

input:

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

output:

DDDDDDDDDDDDDLUUUUUUUUUUUUULDDDDDDDDDDDDDLUUUUUUUUUUUUULDDDDDDDDDDDDDLUUUUUUUUUUUUULDDDDDDDDDDDDDLUUUUUUUUUUUUUDDDDDDDDDDDDDRUUUUUUUUUUUUURDDDDDDDDDDDDDRUUUUUUUUUUUUURDDDDDDDDDDDDDRUUUUUUUUUUUUURDDDDDDDDDDDDDRRUUUUUUUUUUUUURDDDDDDDDDDDDDRUUUUUUUUUUUUURDDDDDDDDDDDDDRUUUUUUUUUUUUURDDDDDDDDDDDDDRUUUUUU...

result:

ok Valid Solution (Length = 1135).

Test #54:

score: 0
Accepted
time: 21ms
memory: 92672kb

input:

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

output:

UUUUUUUUULLDDDDDDDDDDDDDDDDDDLLUUUUUUUUUUUUUUUUUULRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRRRRUUUUUUUULRRRUUUUUUUUUULRRRDDDDDDDDDDDDDDDDDDLLUUUUUUUDLRRLDDLRRLDDLRRLDDLRRRRRUUUUUUUUUUUUUUUUUULRRRDDDDDDDDDDDDDDDDDDLRRRUUUUUUUUUUUUUUUUUULRRRDDDDDDDDDDDDDDDDDDLRRRUUUUUUUUUUUUUUUUUULRDDLRD...

result:

ok Valid Solution (Length = 1177).

Test #55:

score: 0
Accepted
time: 12ms
memory: 88984kb

input:

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

output:

URRRRRRRRRRRRRRRRRRRUDLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUDRRRRRRRRRRRRRRRRRRRDULLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUURRRRRRR...

result:

ok Valid Solution (Length = 437).

Test #56:

score: 0
Accepted
time: 12ms
memory: 90032kb

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: 19ms
memory: 93620kb

input:

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

output:

UUULLDDDDDDDDDDDDLDDDDLLDLUUULUUUULUUUUUUUUUUUULDDLDDDDLUUUULUULDDDDDDDDRUUUUUDDDDRDRDDDDDDDDDDDRURUULUUUUDDRLDDRDRDULDLDLULUUUULUULUURUDRLLDDDDUURRLDDDDDDDLUUUDDDRUUUUURDDDDRUUUUUUUURLUURUUUUDDDDLLULDLUUUUUUUURRRLLDDRDDDDRUUUURUURRRRDDLDDDDDDLUUUUUUDDDDDDDDRDDDDRDDRLUURUUUUUULUUUURDDRUUUUUULRRRRRRR...

result:

ok Valid Solution (Length = 1301).

Test #58:

score: 0
Accepted
time: 15ms
memory: 93764kb

input:

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

output:

DDDDLUUUULDLULDDDDDDDDDDDDDRUUUUUURUUUULUDDDUURDDDRDDDDDDDDDDDLUUUUUUUUDDDDDLDLDDRLULLDLUUUUUUULUUUUUUUUUULDLULDURDDDDDDDDDDDDDDDDDLUUUUDDDDRRUUUUUUUUUUUUUDDDDDDDRDDDDDDUUUUUULDDDDDDLUUUUUULRUULUUUUUUDDDDDDRUUUUUUUURURRDDRUURDDDDDDDLUUUUDLDURDDDDLUDRURUUUUUUULDDLUULDDDDDDDDDDRRRUDDULLDDRDDRLUULDDDDD...

result:

ok Valid Solution (Length = 1319).

Test #59:

score: 0
Accepted
time: 20ms
memory: 88312kb

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: 27ms
memory: 96396kb

input:

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

output:

UUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUURDDDDDDDDDDDDDDDDDDDRRUUURUUUUUUUUUUUUUUUURDDDDDDDDDDDDDDDDDDDLUUDDRRUUUUUUUUUUUUUUUUUUURDDDDDDDDDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUURDDDDDDDDDDDDDDDDDDDRUUUUUUUUUUUUUUUUU...

result:

ok Valid Solution (Length = 1635).

Test #61:

score: 0
Accepted
time: 18ms
memory: 93244kb

input:

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

output:

UUUUUUUUUUUUUUUUUDLLUDDDDDDDDDDDDDDDDDDDLRRRUDRRUUUUUUUUUUUUUUUUUUUDLRRRUDDDDDDDDDDDDDDDDDDDLRRRUUUUUUUUUUUUUUUUUUUDLRRRUDDDDDDDDDDDDDDDDDDDLRRRUUUUUUUUUUUUUUUUUUUDLRRRUDDDDDDDDDDDDDDDDDDDLRRRUUUUUUUUUUUUUUUUUUUDLRRRUDDDDDDDDDDDDDDDDDDDLRUULRUULRUULRUULRUULRUULRUULRUULRUULLDDLRDDLRDDLRDDLRDDLRDDLRDD...

result:

ok Valid Solution (Length = 1215).

Test #62:

score: 0
Accepted
time: 8ms
memory: 90908kb

input:

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

output:

LLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUDRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRDDLLLLLLL...

result:

ok Valid Solution (Length = 979).

Test #63:

score: 0
Accepted
time: 12ms
memory: 89984kb

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: 11ms
memory: 93064kb

input:

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

output:

DDDDLLLDDDDDDDDLUUUUUULLLLUULUUUULLDDDDLLUUUULDDDDUUUURRLDDRLDDRRRLUURLUURRRRRRRRDDLDDLLLRRRUULLLLRRRRRRUURLDDRLLUULLLLLLDDDDRDDLDDDDLUUUULDDLDDLDDDDDDDDDULUUDDRRRUUUULUURRRRUURRUULLRRRDDDDDDDDDDLDULUULDDLDULRRUULUULDDUURRRUURUDDDDDUUUULDDLLDDRRDDRRRUUUURDDDDRDURUULRRUUUUUULUUUULDDDDUUUURRRUURUUUULR...

result:

ok Valid Solution (Length = 1223).

Test #65:

score: 0
Accepted
time: 15ms
memory: 94976kb

input:

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

output:

UUUUUUUUUUUUULULDDDDDDDDDDDDDDLUUUULUUUUUUUULUULDDLUULDDDLULUULDDDDDDDDDDDDDDDDDDDRUURUUUUUUUUUUUULUUDDDDDDDDDDDUUUUUUUUURDRDDDDRURUUUUULUDDDDUUURRLDDRDDUULDDDDDDDDDDDDDLULUUUUUURUDDDUULDDDDRLDDDLUDRURDRRUURURUDDDDLUDRRUUURUUUUUUUUUDDDDDDDDRDDDDLUUDDRUUUULDLDDDLUUULDLDDLUUUUURUUUUDRDDDUUULDDDLUUUUUL...

result:

ok Valid Solution (Length = 1463).

Test #66:

score: 0
Accepted
time: 23ms
memory: 92648kb

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: 54ms
memory: 117144kb

input:

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

output:

UUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUU...

result:

ok Valid Solution (Length = 3039).

Test #68:

score: 0
Accepted
time: 44ms
memory: 106112kb

input:

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

output:

UUUUUUUUUUUUUUUUDLLUDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLLUUUUUUUUUUUUUUUUUUUUUUUUUUUUUDLLUDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLLUUUUUUUUUUUUUUUUUUUUUUUUUUUUUDLLUDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLLUUUUUUUUUUUUUUUUUUUUUUUUUUUUUDLLUDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLLUUUUUUUUUUUUUUUUUUUUUUUUUUUUUDLLUDDDDDDDDDDDDDDDDDDDDDDDD...

result:

ok Valid Solution (Length = 2289).

Test #69:

score: 0
Accepted
time: 24ms
memory: 97980kb

input:

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

output:

LLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLL...

result:

ok Valid Solution (Length = 1855).

Test #70:

score: 0
Accepted
time: 23ms
memory: 97292kb

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: 43ms
memory: 113768kb

input:

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

output:

UUUUUULDDLUULDDLUULDDDDLUUUULDDLUULDDLDDDDDDLUUUUUULDDDDDDLDDLUULLUULLUULLUUUULLLDDDDDDLUULUULUULDDDDLLDDDDDDRRDDLLRRRRUUUUUUULUUDDDDDLUULDDUURDDRUUURDDDRRDDDDDDDDDDLLUULUULDDDDDDLLUUUUUURLDDRDDUULDDDDDDDDDDRDDDLUDRRURRUUUULLDDRLUULRRRRRUULUULLRRRRRUULUURRDDDDDDLLRRRRRUUUULUULUUUULUUUULUULDDUURRRLLD...

result:

ok Valid Solution (Length = 2737).

Test #72:

score: 0
Accepted
time: 80ms
memory: 125388kb

input:

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

output:

UUUUULUUUUUUUULUUUUUUUUUUULDDDLUUUDDDDDRDDDDDDDDDDDDDDDDDDDDDDDDLRUULRRUUURUUUULUUUUUUUUDDDDDDDDDDUURDDDDDDDDDRLUURUURDRUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDLUUUUULDURDDDLDDDDDDRUUUDRLDDDDDDDDDDRUUUUUUUUDDDDDDDDDDDDDDUUUUUULUUUUUUUULUUUUUURDDRUUUUURRDDDDDDDDRUUUUUUUUDRDDDDDDDDDDDDDDDDDDLUUUUUUUUUUDLRDDLD...

result:

ok Valid Solution (Length = 3409).

Test #73:

score: 0
Accepted
time: 48ms
memory: 108076kb

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: 43ms
memory: 108724kb

input:

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

output:

UUUUUUULDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUU...

result:

ok Valid Solution (Length = 2543).

Test #75:

score: 0
Accepted
time: 27ms
memory: 100808kb

input:

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

output:

LUUUUUUUUUUUUUULLDDDDDDDDDDDDDDDDDDDDLLUUUUUUUUUUUUUUUUUUUULLDDDDDDDDDDDDDDDDDDDDLLUUUUUUUUUUUUUUUUUUUULLDDDDDDDDDDDDDDDDDDDDLLUUUUUUUUUUUUUUUUUUUULLDDDDDDDDDDDDDDDDDDDDLLUUUUUUUUUUUUUUUUUUUULLDDDDDDDDDDDDDDDDDDDDLLUUUUUUUUUUUUUUUUUUUULLDDDDDDDDDDDDDDDDDDDDLRRLUULRRLUULRRLUULRRLUULRRLUULRRLUULRRLUUL...

result:

ok Valid Solution (Length = 1951).

Test #76:

score: 0
Accepted
time: 19ms
memory: 95568kb

input:

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

output:

LLLLLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRR...

result:

ok Valid Solution (Length = 1445).

Test #77:

score: 0
Accepted
time: 23ms
memory: 95760kb

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: 43ms
memory: 105332kb

input:

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

output:

UUUUUUUUUUUUUUUUUUULRRRDDLDDRRUUUURDDRUUUUUUULDDDLUULDDLUULLRRDDLLRRRUURDDRUUURRDRURDDDLDDDDDDDDLUULLRRDDLLDDLUULLRRDDDDDDLUULUURLDDRDDLDDDDRUURRDDDDDLUUUDDLLRRDRURUURUULUUUUUURDDRDDDDDDRUURUULUUUULRRRDDLRRRUUUUUULLUULUULDDDDDDRRRLLLUURLUUUURRRUUUUURDDDDDRUURUULUDRRURDRURDDDLDDDDLLUULRRLDDDDLLUUUDLL...

result:

ok Valid Solution (Length = 2254).

Test #79:

score: 0
Accepted
time: 61ms
memory: 114008kb

input:

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

output:

ULUUULDDLUUDLDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDLULDDDDDDDDLUUUUUUUUUUUUUUUULDDLUULDDDDDDDDDDDDDDDDDDDDDDDDLUULUUUUUUUUULUUUUUUUUUUUUULDDDDDDDDLUUUUUUUULDDDDLUUUULDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUULDDLUUDDDDDRUDDDDULRUULUUURUURDDDDDDDDDDLDDDDDDDDDDDDDDLUUUUUUUUDDDDD...

result:

ok Valid Solution (Length = 2827).

Test #80:

score: 0
Accepted
time: 44ms
memory: 103312kb

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: 80ms
memory: 130092kb

input:

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

output:

UUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUU...

result:

ok Valid Solution (Length = 3643).

Test #82:

score: 0
Accepted
time: 43ms
memory: 113496kb

input:

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

output:

UUUUUUUUUUUUUUUUUUUDLLUDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLLUUUUUUUUUUUUUUUUUUUUUUUUUUUUUDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRRRRUUUUUUUUUDLRRRUUUUUUUUUUUUUUUUUUUUUDLRRRUDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLLUUUUUUUDLRRLDDLRRLDDLRRLDDLRRRRRUUUUUUUUUUUUUUUUUUUUUU...

result:

ok Valid Solution (Length = 2717).

Test #83:

score: 0
Accepted
time: 27ms
memory: 102304kb

input:

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

output:

RRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLL...

result:

ok Valid Solution (Length = 2319).

Test #84:

score: 0
Accepted
time: 41ms
memory: 98032kb

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: 48ms
memory: 113480kb

input:

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

output:

DDLUUDDRRUUUULLRRRDDRRUULRRDDRDDDDLDDDDLLLLDDDDLLUURUULRDDLDDDDRDDLDDRDDLDDRDDDDLRRUURDDDLRRUUURRRDDLLDURRRUURUULLUUUUUUUUUUUULDDDDLLUUUULDDUURRLDDRLDDDDLUULDDDDDDDDRUURUULUDRRUURLDDDDRLUURLLDDLDDRRRLLLLUUUUUUUURDDRUURRUUUURRUULUURRUULRRDDRRRDDLLDDLLUUUDRLDDDDDDLRRUURDDRRUUUULDDUURRRUULUURRUULUUUULL...

result:

ok Valid Solution (Length = 2740).

Test #86:

score: 0
Accepted
time: 99ms
memory: 125180kb

input:

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

output:

UUUUUUUUUUUUUUUUUULDDDDDDLUUUUUULDDDDDDLUUULUUULDLULDULLDDDDDDDDDDDDDDDDLUUUUUDLDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUULUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLULUUUUUUUUUUUUUUUUUUUUUUUUUUUULDLULDDDDDLUUUUULDDDDDDDDDDDDLLUUUUUUUUUUUULDDDDDDDLDDDDDDDLUUUUUUUUUUUUUURDDDDDUUUUULDDDDDDDDDDDDDDDDDDDDDDDDD...

result:

ok Valid Solution (Length = 3385).

Test #87:

score: 0
Accepted
time: 51ms
memory: 108628kb

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: 89ms
memory: 130068kb

input:

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

output:

UUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLU...

result:

ok Valid Solution (Length = 3653).

Extra Test:

score: 0
Extra Test Passed