QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#648915#7751. Palindrome PathMiniLongAC ✓1ms4248kbC++204.4kb2024-10-17 20:55:472024-10-17 20:56:10

Judging History

你现在查看的是最新测评结果

  • [2024-10-17 20:56:10]
  • 评测
  • 测评结果:AC
  • 用时:1ms
  • 内存:4248kb
  • [2024-10-17 20:55:47]
  • 提交

answer

#include <bits/stdc++.h>
#define _rep(i, x, y) for(int i = x; i <= y; ++i)
#define _req(i, x, y) for(int i = x; i >= y; --i)
#define _rev(i, u) for(int i = head[u]; i; i = e[i].nxt)
#define pb push_back
#define fi first
#define se second
#define mst(f, i) memset(f, i, sizeof f)
using namespace std;
#ifdef ONLINE_JUDGE
#define debug(...) 0
#else
#define debug(...) fprintf(stderr, __VA_ARGS__), fflush(stderr)
#endif
typedef long long ll;
typedef pair<int, int> PII;
namespace fastio{
    #ifdef ONLINE_JUDGE
    char ibuf[1 << 20],*p1 = ibuf, *p2 = ibuf;
    #define get() p1 == p2 && (p2 = (p1 = ibuf) + fread(ibuf, 1, 1 << 20, stdin), p1 == p2) ? EOF : *p1++
    #else
    #define get() getchar()
    #endif
    template<typename T> inline void read(T &t){
        T x = 0, f = 1;
        char c = getchar();
        while(!isdigit(c)){
            if(c == '-') f = -f;
            c = getchar();
        }
        while(isdigit(c)) x = x * 10 + c - '0', c = getchar();
        t = x * f;
    }
    template<typename T, typename ... Args> inline void read(T &t, Args&... args){
        read(t);
        read(args...);
    }
    template<typename T> void write(T t){
        if(t < 0) putchar('-'), t = -t;
        if(t >= 10) write(t / 10);
        putchar(t % 10 + '0');
    }
    template<typename T, typename ... Args> void write(T t, Args... args){
        write(t), putchar(' '), write(args...);
    }
    template<typename T> void writeln(T t){
        write(t);
        puts("");
    }
    template<typename T> void writes(T t){
        write(t), putchar(' ');
    }
    #undef get
};
using namespace fastio;
#define multitest() int T; read(T); _rep(tCase, 1, T)
namespace Calculation{
    const ll mod = 998244353;
    ll ksm(ll p, ll h){ll base = p % mod, res = 1; while(h){if(h & 1ll) res = res * base % mod; base = base * base % mod, h >>= 1ll;} return res;}
    void dec(ll &x, ll y){x = ((x - y) % mod + mod) % mod;}
    void add(ll &x, ll y){x = (x + y) % mod;}
    void mul(ll &x, ll y){x = x * y % mod;}
    ll sub(ll x, ll y){return ((x - y) % mod + mod) % mod;}
    ll pls(ll x, ll y){return ((x + y) % mod + mod) % mod;}
    ll mult(ll x, ll y){return x * y % mod;}
}
using namespace Calculation;
const int N = 35;
int n, m, num, sx, sy, ex, ey;
char s[N][N];
int dx[] = {0, 0, 1, -1}, dy[] = {-1, 1, 0, 0};
char ch[] = {'L', 'R', 'D', 'U'};
bool vis[N][N];
vector<int> st;
bool check(int x, int y){
    if(x < 1 || y < 1 || x > n || y > m || s[x][y] == '0') return 0;
    return 1;
}
void dfs(int x, int y){
    vis[x][y] = 1, num--;
    _rep(i, 0, 3){
        int nx = x + dx[i], ny = y + dy[i];
        if(!check(nx, ny) || vis[nx][ny]) continue;
        st.pb(i);
        dfs(nx, ny);
        st.pb(i ^ 1);
    }
}
int pre[N][N];
void bfs(){
    _rep(i, 1, n) _rep(j, 1, m) vis[i][j] = pre[i][j] = 0;
    queue<PII> q; q.push({sx, sy}), vis[sx][sy] = 1;
    while(q.size()){
        int x = q.front().fi, y = q.front().se; q.pop();
        _rep(i, 0, 3){
            int nx = x + dx[i], ny = y + dy[i];
            if(!check(nx, ny) || vis[nx][ny]) continue;
            vis[nx][ny] = 1, pre[nx][ny] = i;
            q.push({nx, ny});
        }
    }
    vector<int> cur;
    int tx = ex, ty = ey;
    while(!(tx == sx && ty == sy)){
        int t = pre[tx][ty];
        cur.pb(t);
        tx += dx[t ^ 1], ty += dy[t ^ 1];
    }
    while(cur.size()) st.pb(cur.back()), cur.pop_back();
}
vector<int> ans;
void move(int x, int y, int op){
    int k = 0, tx = ex, ty = ey;
    while(check(x + dx[op ^ 1], y + dy[op ^ 1]) && check(tx + dx[op], ty + dy[op])){
        k++, x += dx[op ^ 1], y += dy[op ^ 1], tx += dx[op], ty += dy[op];
    }
    if(!check(tx + dx[op], ty + dy[op])){
        _rep(i, 1, k) ans.pb(op ^ 1);
        _rep(i, 1, k + 1) ans.pb(op);
    }else{
        _rep(i, 1, k + 1) ans.pb(op ^ 1);
        _rep(i, 1, k + 1) ans.pb(op);
    }
}
int main(){
    read(n, m);
    _rep(i, 1, n){
        scanf("%s", s[i] + 1);
        _rep(j, 1, m) num += s[i][j] == '1';
    }
    read(sx, sy, ex, ey);
    dfs(sx, sy);
    if(num) return puts("-1"), 0;
    bfs();
    int x = sx, y = sy;
    for(auto &i : st) move(x, y, i), x += dx[i], y += dy[i];
    vector<int> res;
    for(auto &i : ans) res.pb(i);
    reverse(ans.begin(), ans.end());
    for(auto &i : ans) res.pb(i);
    for(auto &i : res) putchar(ch[i]);
    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: 3628kb

input:

2 2
11
11
1 1 2 2

output:

RDRLRDURLRDDRLRUDRLRDR

result:

ok Valid Solution (Length = 22).

Test #2:

score: 0
Accepted
time: 0ms
memory: 3676kb

input:

2 2
10
01
1 1 2 2

output:

-1

result:

ok No Solution.

Test #3:

score: 0
Accepted
time: 1ms
memory: 3744kb

input:

1 1
1
1 1 1 1

output:


result:

ok Valid Solution (Length = 0).

Test #4:

score: 0
Accepted
time: 0ms
memory: 3628kb

input:

5 4
1111
1111
1111
1111
1111
4 2 4 2

output:

RLLUDDLRLLRRLLRRRDURLDDUURLLRLLDDDUUULRLLRRLLRRRUDDDDDUUUDDDUUUURLRLLRLLLRLLRRLLRRRUDRLRLLRLLUDDLRLLRRUDDLLRRRUDDRLRLLRLLDULRRLUDLLRLLRLRDDURRRLLDDURRLLRLDDULLRLLRLRDURRRLLRRLLRLLLRLLRLRUUUUDDDUUUDDDDDURRRLLRRLLRLUUUDDDLLRLLRUUDDLRUDRRRLLRRLLRLDDULLR

result:

ok Valid Solution (Length = 250).

Test #5:

score: 0
Accepted
time: 0ms
memory: 3676kb

input:

5 5
11111
10101
11111
10101
11111
1 4 5 5

output:

RRLLRRRLLLRRRRLLLLDDRRRRDDRLRRLLRRRLLLRRRRLLLLDUDRRDUDRRDUDDUUDDDUUUDDDDUUUUDDRLRRLLDDDUUUDRRRLLLRRRRLLLLDDDUUUDDDDUUUURRRRDDDDDDDDRRRRUUUUDDDDUUUDDDLLLLRRRRLLLRRRDUUUDDDLLRRLRDDUUUUDDDDUUUDDDUUDDUDRRDUDRRDUDLLLLRRRRLLLRRRLLRRLRDDRRRRDDLLLLRRRRLLLRRRLLRR

result:

ok Valid Solution (Length = 254).

Test #6:

score: 0
Accepted
time: 0ms
memory: 3980kb

input:

5 3
111
100
111
001
111
4 3 3 2

output:

DRLRLLLRLRRUURLRLLUULRLRRRLRLLDDLRLRRDURLLRUDRRLRLDDLLRLRRRLRLUULLRLRUURRLRLLLRLRD

result:

ok Valid Solution (Length = 82).

Test #7:

score: 0
Accepted
time: 0ms
memory: 3676kb

input:

5 4
1001
1101
1111
0011
0010
2 2 1 1

output:

LUUDDRRRUUDDDLUUDDURUUUUDUUDDLLLUUUDRLUULRDUUULLLDDUUDUUUURUDDUULDDDUURRRDDUUL

result:

ok Valid Solution (Length = 78).

Test #8:

score: 0
Accepted
time: 0ms
memory: 3692kb

input:

5 3
101
111
100
111
100
4 1 2 2

output:

LRLRRRLRLLDUUULRLRRUDRLRLLUDDDUULRRLUUDDDULLRLRDURRLRLUUUDLLRLRRRLRL

result:

ok Valid Solution (Length = 68).

Test #9:

score: 0
Accepted
time: 0ms
memory: 3988kb

input:

5 5
01110
10110
11110
11011
11100
2 4 5 1

output:

LDLLDLRDLLRLLRRLDULDDUUDDDUUUDLRLLRRLLRRRDLRLDULDUDDUULLRLLRRLDLRLDLLDDDDLLDLRLDLRRLLRLLUUDDUDLUDLRLDRRRLLRRLLRLDUUUDDDUUDDLUDLRRLLRLLDRLDLLDL

result:

ok Valid Solution (Length = 142).

Test #10:

score: 0
Accepted
time: 0ms
memory: 3680kb

input:

5 3
011
111
110
111
011
3 1 2 1

output:

LRUUDDDLLRLLRRUDLLRULUULLRLLRRULLRUDLUUDDLUULDDUULDURLLURRLLRLLUULURLLDURRLLRLLDDDUURL

result:

ok Valid Solution (Length = 86).

Test #11:

score: 0
Accepted
time: 0ms
memory: 3656kb

input:

4 5
11111
11111
11111
11111
3 2 1 3

output:

RRLLLUUUDDDLRLLRRLLRRRLLRRRURLRRLLURRLLLRRLLLULRLLRRLLRRRLLRRRUDRLLLRRRURLRRLLRRLLLRRLLLUDLRLLRRUUDDLLRRRLLRRRUUUDDDRLRRLLRRLLLRRLLLULRLLRRUUUURRLLRLULLLRRLLLRRLLRRLRDDDUUURRRLLRRRLLDDUURRLLRLDULLLRRLLLRRLLRRLRURRRLLLRDURRRLLRRRLLRRLLRLULLLRRLLLRRULLRRLRURRRLLRRRLLRRLLRLDDDUUULLLRR

result:

ok Valid Solution (Length = 282).

Test #12:

score: 0
Accepted
time: 0ms
memory: 3752kb

input:

5 5
11111
10101
11111
10101
11111
2 5 1 1

output:

UUDDLLLLUUUDDDUUUUDDDDLRLLRRLLLRRRLLLLRRRRUUUUUDDDDLLUUUUUDDDDLLUUUULRLLRRLLLRRRLLLLRRRRLLUDULLUDUUDDLRLLRRLLLRRRLLLLRRRRUULLLLLLLLUURRRRLLLLRRRLLLRRLLRLDDUUDULLUDULLRRRRLLLLRRRLLLRRLLRLUUUULLDDDDUUUUULLDDDDUUUUURRRRLLLLRRRLLLRRLLRLDDDDUUUUDDDUUULLLLDDUU

result:

ok Valid Solution (Length = 254).

Test #13:

score: 0
Accepted
time: 0ms
memory: 3700kb

input:

4 5
11111
10000
11111
00001
1 3 4 5

output:

LLDDRRRRDDULLLLDUDUURRRRLLLLDDRRRRDDRRRRDDLLLLRRRRUUDUDLLLLUDDRRRRDDLL

result:

ok Valid Solution (Length = 70).

Test #14:

score: 0
Accepted
time: 0ms
memory: 3680kb

input:

3 5
10100
00010
00111
1 3 1 1

output:

-1

result:

ok No Solution.

Test #15:

score: 0
Accepted
time: 0ms
memory: 3976kb

input:

4 5
10001
11111
11100
11111
4 5 3 1

output:

LLLLDULRLLRRDDUULLDDUUUUDLRLLRRLLRRRLLRRRDUUDLLUDLLUDDLRLLRRLLRRRLLRRRLLLLDUUDLLLLRRRLLRRRLLRRLLRLDDULLDULLDUUDRRRLLRRRLLRRLLRLDUUUUDDLLUUDDRRLLRLUDLLLL

result:

ok Valid Solution (Length = 152).

Test #16:

score: 0
Accepted
time: 0ms
memory: 3748kb

input:

3 5
11111
10100
11111
1 2 3 5

output:

RRRRLLLLDDRRRRRLRRLLUURRRLRRLLDDRRRLLLRRRRLLLLUURRDDRRRRDDRRUULLLLRRRRLLLRRRDDLLRRLRRRUULLRRLRRRRRDDLLLLRRRR

result:

ok Valid Solution (Length = 108).

Test #17:

score: 0
Accepted
time: 0ms
memory: 3744kb

input:

4 5
01110
10101
11011
10111
1 3 2 3

output:

-1

result:

ok No Solution.

Test #18:

score: 0
Accepted
time: 0ms
memory: 3760kb

input:

5 5
11111
11111
11111
11111
11111
1 3 5 2

output:

RLLRLLDLRLLRRLLLRRRLLLRRRRDRLRLLRLLRLLDLRLLRRLLLRRRLLLRRRRDRLRLLRLLRLLLRLLRRLLLRRRLLLRRRRDURLRLLRLLRLLDDUULRLLRRLLLRRRLLLRRRRDDDUUUDDDDUUUURLLLLRRRRDRLRLLRLLRLLDDDDUUUULRLLRRRLLDDDDDDDDLLRRRLLRLUUUUDDDDLLRLLRLLRLRDRRRRLLLLRUUUUDDDDUUUDDDRRRRLLLRRRLLLRRLLRLUUDDLLRLLRLLRLRUDRRRRLLLRRRLLLRRLLRLLLRLLRLL...

result:

ok Valid Solution (Length = 362).

Test #19:

score: 0
Accepted
time: 0ms
memory: 3988kb

input:

5 5
11111
10101
11111
10101
11111
5 1 2 3

output:

RRRRDUDUULLLLUUUDDDDUUDUUDUURRRRUDDUULLUDDUULLUDUUDDRRUUUDDDDUURRUUUDDDUUUDDDDLLLLRRDUDUUDUUUUDUUDUDRRLLLLDDDDUUUDDDUUURRUUDDDDUUURRDDUUDULLUUDDULLUUDDURRRRUUDUUDUUDDDDUUULLLLUUDUDRRRR

result:

ok Valid Solution (Length = 184).

Test #20:

score: 0
Accepted
time: 0ms
memory: 3908kb

input:

5 5
11111
10000
11111
00001
11111
4 5 5 3

output:

DRLRRLLRRLLLRRLLLLRLLRRLLRRRLLRRRUURLRRLLRRLLLRRLLLUULRLLRRLLRRRLLRRRRLRRLLRRLLLRRLLLDDLRLLRRLLRRRLLRRRDDRLRRLLLLRRLRDDRRRLLRRRLLRRLLRLDDLLLRRLLLRRLLRRLRRRRLLRRRLLRRLLRLUULLLRRLLLRRLLRRLRUURRRLLRRRLLRRLLRLLLLRRLLLRRLLRRLRD

result:

ok Valid Solution (Length = 222).

Test #21:

score: 0
Accepted
time: 0ms
memory: 3756kb

input:

5 5
01010
10101
10101
11001
10011
4 1 5 4

output:

-1

result:

ok No Solution.

Test #22:

score: 0
Accepted
time: 0ms
memory: 3748kb

input:

5 5
10101
11111
10101
11111
11111
3 1 2 4

output:

DLRLRRLRRLRRDRLRRLLRRRLLLRRRLLLLLRLRRLRRLRRUUURLRRLLRRRLLLRRRLLLLUDLRLRRDUUDLRRLRRUDDDRLRRLLRRRLLLRRRLLLLUULRLRRLRRRRLRRLRLUULLLLRRRLLLRRRLLRRLRDDDURRLRRLDUUDRRLRLDULLLLRRRLLLRRRLLRRLRUUURRLRRLRRLRLLLLLRRRLLLRRRLLRRLRDRRLRRLRRLRLD

result:

ok Valid Solution (Length = 230).

Test #23:

score: 0
Accepted
time: 0ms
memory: 3648kb

input:

5 5
00001
11111
01110
01111
01111
1 5 5 2

output:

DLLLLLRDLRLLRRDLLDLRLLRRLLLRRRDUDLLLDULRLLRRDDUULLDDDUUULLRRLLLRRRLLLRRRRDUDLLLDDDDDDLLLDUDRRRRLLLRRRLLLRRLLUUUDDDLLUUDDRRLLRLUDLLLDUDRRRLLLRRLLRLDLLDRRLLRLDRLLLLLD

result:

ok Valid Solution (Length = 164).

Test #24:

score: 0
Accepted
time: 0ms
memory: 3912kb

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: 3928kb

input:

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

output:

RRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRLLLLLLRRRRRLLLLLLUUUUUUUDDDDDDDLRLLRRLLRRRLLRRRLLRRRLLRRRLLRRRUUUUUUUDDDDDDDDRLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRLLLLLLRRRRRLLLLLLUUUUUUUDDDDDDDDLRLLRRLLRRRLLRRRLLRRRLLRRRLLRRRRLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRLLLLLLRRRRRLLLLLLDULRLLRRLLRRRLLRRRLLRRRLLRRRLLRRRDDUUDDU...

result:

ok Valid Solution (Length = 1986).

Test #26:

score: 0
Accepted
time: 0ms
memory: 3684kb

input:

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

output:

LLLLLUDUUDDRRRRRLUUUDDDUUUUDDDDLLLLUUUUUDDDDDUUUUUUDDDDDDRRRRRLUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDLLLLUUUUUUUUDDDDDDDDDDUDUUUUUUUUUUDDDDDDDDRRUUUUUUUUDDDDDDDDDDUDUUUUUUUUUUDDDDDDDDRRRLUUUUUUUUDDDDDDDDDDUDUUDUUDUUUUUUUUDDDDDDLLDUUUUUUUUDDDDDDLLDUUDUUDUUUUUUDDDDRRDUUUUUUDDDDRRRLDUUDUUDUUUUDDLLDUUUUDDLLDUUD...

result:

ok Valid Solution (Length = 624).

Test #27:

score: 0
Accepted
time: 0ms
memory: 3648kb

input:

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

output:

RLLRLLRLLRLLDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRDDRLRLLRLLRLLRLLRLLRLLRLLRLLDULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRUURLRLLRLLRLLRLLRLLRLLRLLRLLUULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLL...

result:

ok Valid Solution (Length = 1204).

Test #28:

score: 0
Accepted
time: 0ms
memory: 3936kb

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: 0ms
memory: 3696kb

input:

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

output:

LLLLUUUDDDDUUUDDDDRRRRRLDUUUUDDDDLUDLLLUUUDDDDRRRRRLLLLLDURRRDDUULDDDUUUUUUDDDDLLDDDUUUDDDUUUUDDDUUUUDDDUUUURRRRRUUUDDDLLLRRRUUUDDDDDUDDUUDDDUUUDDDUUUULLLLLUUDDDDDUUUUDDDUUUUUDRRRDUUDRRUDUUDDLLLLLUUUDDDDUUUDDDDRRRRLLUUUDDDDDDUUULLRRRRDDDDUUUDDDDUUULLLLLDDUUDURRDUUDRRRDUUUUUDDDUUUUDDDDDUULLLLLUUUUDDD...

result:

ok Valid Solution (Length = 444).

Test #30:

score: 0
Accepted
time: 0ms
memory: 3764kb

input:

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

output:

LRLLRRLLLRRRLLLRRRRDLLRLLRRDLDLLLLDULRDUULLRDLDLRLLRRLLLRRRLLLRRRRLLLRRRRLLLRRRRDULLLRRRDUDUULDULLLLLLDUULRDUULLRLLRRLLLRRRLLLRRRRLLLRRRRDLLLRLLRRDUUDUULLLLDUULDULRLLRRLLLRRRLLLRRRRLLLRRRRLLLRRRRDLLRLLRRDLLLLRRRRDDDDUUDUUDUUDUULDUULLLDLLLLRRRDUULLLDLRDLRLLRRLLLRRRLLLRRRRDLLLLDLDLRLLRRLLLRRRLLLRRRRLL...

result:

ok Valid Solution (Length = 708).

Test #31:

score: 0
Accepted
time: 0ms
memory: 3744kb

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: 0ms
memory: 3928kb

input:

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

output:

RLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRLLLLLLLLLDURRRRRRRRRDDUURLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRLLLLLLLLLDDDUUURRRRRRRRRDDDDUUUURLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRL...

result:

ok Valid Solution (Length = 1762).

Test #33:

score: 0
Accepted
time: 0ms
memory: 3668kb

input:

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

output:

LLLLUDDUDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLUDDUDDLLLLLLLLUDDUDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLUDDDUDDUUUDDLLUDDDUDDUUUDDLLUDDDUDDUUUDDLLUDDDUDDUUUDDLLUDDDUDDUUDDDUUUDDDDUUUUUDDLRLLRR...

result:

ok Valid Solution (Length = 1736).

Test #34:

score: 0
Accepted
time: 0ms
memory: 3764kb

input:

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

output:

RLLRLLRLLDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRDDRLRLLRLLRLLRLLRLLRLLRLLRLLDULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRUURLRLLRLLRLLRLLRLLRLLRLLRLLUULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRR...

result:

ok Valid Solution (Length = 1212).

Test #35:

score: 0
Accepted
time: 0ms
memory: 3672kb

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: 3948kb

input:

5 10
1001011101
1111111111
1000011001
1111111111
1101110010
4 3 4 7

output:

RRRRRRLLLLLLLRRRRRRLLLLLLLDLRRLDUDDUUDDDUUULRLLRRLLLRRRLLLRRRRLLLRRRRLLLRRRRLLLRRRRLLLRRRRLLLRRRRDDRLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLDLRLLRRRLRRLLDULLLRRRRLLLRRRRDDUULRRLDLLLRRRRLLLRRRRLLLRRRRDDULLLRRRRDUDDUUDDDUUUDRLRRLLDURLRRLLLRLLRRDRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLDUDRRRRRRLLLLLLLRRRR...

result:

ok Valid Solution (Length = 730).

Test #37:

score: 0
Accepted
time: 0ms
memory: 3684kb

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: 3644kb

input:

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

output:

LLLUUDDDLLLUDRRRRRUUDDDLLLRUUDDDRRRRDULRRRUUDDDUUDDDLUDLLLDULLLLLUUDDDRLDUDDUURLDDDUUUUUDDDUUDDDRRRUUDDDDURRRLUUDDDRRRRLDURDDUUDDDUUUDDDDUUUUDDDDDUUUUULLLLLRRRUUDDDDDDUUUDDDDUUUURRDDDDDDUUUUUUULLLLLLLLLRUUDDDDDUUUDDDDUUUUUDRRDDDDDDUUUUUUUUDRRDDDDDDUUUUUUURRLLUDRRRRDDDDDDUUUUUUUUDUUDDLLUUDDDRRUUDDDUU...

result:

ok Valid Solution (Length = 772).

Test #39:

score: 0
Accepted
time: 0ms
memory: 3760kb

input:

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

output:

RLLRLLRLLRLLUUUUUUUDDDDDDDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRDURLRLLRLLRLLDDUURLLRLLRLLRLLRLLDDUUULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRUUUUUUUDDDDDDDRLRLLRLLLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLL...

result:

ok Valid Solution (Length = 2646).

Test #40:

score: 0
Accepted
time: 0ms
memory: 3684kb

input:

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

output:

UUDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRRLUUUDDDUUUUDDDDRRLLRRLLLRRLLLRRLLLRRLLLRRLLLRRLLLRRLLLUUUUUDDDDDUUUUUUDDDDDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRRLUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDRRLLRRLLLRRLLLR...

result:

ok Valid Solution (Length = 1974).

Test #41:

score: 0
Accepted
time: 0ms
memory: 3768kb

input:

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

output:

RRRRLLLLLRRRRLLLLLRRRRLLLLLUULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRUURLRRLLRRRLLLRRRRLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLUULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRRLRRLLRRRLLLRRRRLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLL...

result:

ok Valid Solution (Length = 1694).

Test #42:

score: 0
Accepted
time: 0ms
memory: 3620kb

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: 3696kb

input:

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

output:

RRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLDLRLRRLRRDRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLDDLRLRRLRRLRRLRRLRRLRRLRRLRRDURLDUURRLLRRRLLLRRRRLLLLRRRRRLLLLLLRRDDUULRRDULRLRRRLRRLLDLRRLRRLRRRLDLRDRLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLDUDRRRRRRRLL...

result:

ok Valid Solution (Length = 1510).

Test #44:

score: 0
Accepted
time: 0ms
memory: 3692kb

input:

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

output:

LRUDRRRRLLLLLRRRRLLLLLRRRRLLLLLUDDUDDLRLLRRLLLRRRLLLLRRRRLLLLRRRRRLLLLRRRRRDURRLLRRRLLLRRRRLLLLRRRRLLLLLLRLLRRDUULLLLRRRRRLLLLRRRRRLLLLRRRRRUDDDUDUURRRLLLRRRRLLLLDUURRRLLLDURRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLUDDLRLLRRRLRRLLUDDDUUDUUDUULRDUULRLLRRUDDLRRLDUUDUURRRRLLLLLDUURRRRLLLLRRRRLLLLLUDDULRLLRRL...

result:

ok Valid Solution (Length = 1462).

Test #45:

score: 0
Accepted
time: 0ms
memory: 3648kb

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: 1ms
memory: 3808kb

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:

RRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRLLLLLLLLLRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLUUUUUUUDDDDDDDDRRRRRRRRRRRUUUUUUUDDDDDDDDRLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRLLLLLLLLLRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLUUUUUUUDDDDDDDD...

result:

ok Valid Solution (Length = 7002).

Test #47:

score: 0
Accepted
time: 0ms
memory: 3760kb

input:

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

output:

LLLLLUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDRRRRRRRRRRRRRRRRUUUUUUUUUDDDDDDDDDUUUUUUUUUUDDDDDDDDDDLLLLLLLLLLLLLLLLUUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDRRRRRRRRRRRRRRRRUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDLLLLLLLLLLLLLLLLUUUUUUUUUUUUUUDDDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDDRRRRR...

result:

ok Valid Solution (Length = 6370).

Test #48:

score: 0
Accepted
time: 0ms
memory: 4080kb

input:

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

output:

RLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRLLLLLLLLLRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLDDLRLLR...

result:

ok Valid Solution (Length = 11178).

Test #49:

score: 0
Accepted
time: 0ms
memory: 3980kb

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: 1ms
memory: 3832kb

input:

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

output:

RRLLDRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRLLLLLLLLLRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLLDLRLLRRLLLR...

result:

ok Valid Solution (Length = 9406).

Test #51:

score: 0
Accepted
time: 0ms
memory: 3840kb

input:

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

output:

RRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLUDRRRLLLRRRRLLLLRRRRLLLLLRRRRLLLLLUUDDLRLRRLRRLRRLRRUUUDDDRLRRLLRRRLLLRRRRLLLLRRRRLLLLLUUUUDDDDLRLRRLRRLRRLRRLRRLRRLRRLRRUUUUUDDDDDRRLLRRRLLLUUDDRRRRLLLLLRRRRLLLLLUUUUUUUDDDDDDDRRRRLLLLLRRRRLLLLLUUUUUUUDDDDDDDRRRRLLLLLUDRRRRLLLLLUDRRLLUDLRLRRLRRLRRLRRLRRLRRLRRLRRL...

result:

ok Valid Solution (Length = 6882).

Test #52:

score: 0
Accepted
time: 0ms
memory: 3688kb

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: 1ms
memory: 3944kb

input:

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

output:

RRRRRRRRRRRRLLLLLLLLLLLLLDULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRDRLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRR...

result:

ok Valid Solution (Length = 16472).

Test #54:

score: 0
Accepted
time: 0ms
memory: 3852kb

input:

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

output:

RRRRRRRRRRRRRRRRRRRLUDUUDDLLLLLLLLLLLLLLLLLLUUUDDDUUUUDDDDRRRRRRRRRRRRRRRRRRRLUUUUUDDDDDUUUUUUDDDDDDLLLLLLLLLLLLLLLLLLUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDRRRRRRRRRRRRRRRRRRRLUUUUUUUUUDDDDDDDDDUUUUUUUUUDDDDDDDDDDLLLLLLLLLLLLLLLLLLUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDRRRRRRRRRRRRRRRRRRRLUUUUUUUUUDDDDDDDDDD...

result:

ok Valid Solution (Length = 6710).

Test #55:

score: 0
Accepted
time: 0ms
memory: 3988kb

input:

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

output:

LLLLLUDUDDRRRRRRRRRRRRRRRRRRRUDUDDLLLLLLLLLLLLLLLLLLLUDDURRRRRRRRRRRRRRRRRRRDUDUULLLLLLLLLLLLLLLLLLLDUDUURRRRRRRRRRRRRRRRRRRDUDUULLLLLLLLLLLLLLLLLLLDUDUURRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLUDUDDRRRRRRRRRRRRRRRRRRRUDUDDLLLLLLLLLLLLLLLLLLLUDUDDRRRRRRRRRRRRRRRRRRRUDDURRRRRRRRRRRRRRRRRRRDDUDULLLLLLLLL...

result:

ok Valid Solution (Length = 530).

Test #56:

score: 0
Accepted
time: 0ms
memory: 3752kb

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: 1ms
memory: 3832kb

input:

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

output:

LLLLLLLLUUUDDDDUUUDDDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLRR...

result:

ok Valid Solution (Length = 9376).

Test #58:

score: 0
Accepted
time: 1ms
memory: 3832kb

input:

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

output:

RRLLRRRLLLRRRRLLLLDRRRRRRRRLLLLLLLLLDRRRRRRRRLLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRLLLLLLLLLDULRDDUURRRLLLDDDUUULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRR...

result:

ok Valid Solution (Length = 12024).

Test #59:

score: 0
Accepted
time: 0ms
memory: 3956kb

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: 0ms
memory: 3820kb

input:

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

output:

RRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRLLLLLLLLLRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRR...

result:

ok Valid Solution (Length = 22004).

Test #61:

score: 0
Accepted
time: 1ms
memory: 3892kb

input:

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

output:

RRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRLLLLLLLLLRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRR...

result:

ok Valid Solution (Length = 15464).

Test #62:

score: 0
Accepted
time: 0ms
memory: 3812kb

input:

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

output:

RLLRLLRLLRLLRLLRLLRLLRLLRLLRLLUULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRRRR...

result:

ok Valid Solution (Length = 8830).

Test #63:

score: 0
Accepted
time: 0ms
memory: 3752kb

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: 1ms
memory: 4116kb

input:

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

output:

RRRLLLRRRRLLLLRRRRRLLLLLRRRRRLLLLLLRRRRRLLLLLLRRRRRLLLLLLRRRRRLLLLLLRRRRRLLLLLLRRRRRLLLLLLRRRRRLLLLLLRRRRRLLLLLLRRRRRLLLLLLRRRRRLLLLLLRRRRRLLLLLLRRRRRLLLLLLRRRRRLLLLLLRRRRRLLLLLLDLRDRRRRRLLLLLLDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRR...

result:

ok Valid Solution (Length = 12178).

Test #65:

score: 0
Accepted
time: 1ms
memory: 3800kb

input:

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

output:

LLLUUUUUUUUUDDDDDDDDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLL...

result:

ok Valid Solution (Length = 10626).

Test #66:

score: 0
Accepted
time: 0ms
memory: 3692kb

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: 1ms
memory: 3816kb

input:

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

output:

RLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLUUUUDDDDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLL...

result:

ok Valid Solution (Length = 42908).

Test #68:

score: 0
Accepted
time: 0ms
memory: 3888kb

input:

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

output:

UUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDLLLLLLLLLLUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDRRRRRRRRRRRRRRRRRRRRRRRRUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDLLLLLLLLLLLLLLLLLLLLLLLLUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDRRRRRRRRRRR...

result:

ok Valid Solution (Length = 20672).

Test #69:

score: 0
Accepted
time: 1ms
memory: 3868kb

input:

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

output:

LRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRDDRLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLRRR...

result:

ok Valid Solution (Length = 31622).

Test #70:

score: 0
Accepted
time: 0ms
memory: 3680kb

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: 1ms
memory: 3848kb

input:

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

output:

LLUUDDLLUUUUUUDDDDDDDUUUUUUDDDDDDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRR...

result:

ok Valid Solution (Length = 32702).

Test #72:

score: 0
Accepted
time: 1ms
memory: 3816kb

input:

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

output:

LLLUUUUUDDDDDDLUDLLLLLLLLLLLLUUUUUDDDDDDLRLLRRLLLRRRLLLLRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRUUUUUDDDDDDLLUUUUUDDDDDDLLLLLLLLLLLLLLLLLLLLLLLUUUU...

result:

ok Valid Solution (Length = 15980).

Test #73:

score: 0
Accepted
time: 0ms
memory: 3720kb

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: 1ms
memory: 3848kb

input:

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

output:

RRLLRRRLLLRRRRLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLUUUUUUUDDDDDDDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRR...

result:

ok Valid Solution (Length = 47870).

Test #75:

score: 0
Accepted
time: 1ms
memory: 4148kb

input:

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

output:

RRRRRLLLLLLRRRRRLLLLLLRRRRRLLLLLLDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRR...

result:

ok Valid Solution (Length = 25678).

Test #76:

score: 0
Accepted
time: 1ms
memory: 3888kb

input:

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

output:

RLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLRLLLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLL...

result:

ok Valid Solution (Length = 24386).

Test #77:

score: 0
Accepted
time: 0ms
memory: 3684kb

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: 1ms
memory: 4084kb

input:

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

output:

LLLLLLLLLLLLLLLLLLLLLLLLLLLLUUUUUUDDDDDDLRLRRUUUUDDDDLLUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDLRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRUDLLUUDDLLLLLLLLLLLLLLLLLLLLLLLLLLLUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDDLRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLRRLR...

result:

ok Valid Solution (Length = 5964).

Test #79:

score: 0
Accepted
time: 1ms
memory: 3952kb

input:

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

output:

RLRRLLUDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRUDRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLUDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLL...

result:

ok Valid Solution (Length = 31060).

Test #80:

score: 0
Accepted
time: 1ms
memory: 3960kb

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: 1ms
memory: 4248kb

input:

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

output:

RRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRLLLLLLLLLRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLL...

result:

ok Valid Solution (Length = 80420).

Test #82:

score: 0
Accepted
time: 1ms
memory: 4148kb

input:

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

output:

RRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRRRRRLLLLLLLLLLL...

result:

ok Valid Solution (Length = 55668).

Test #83:

score: 0
Accepted
time: 0ms
memory: 4216kb

input:

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

output:

RLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRLLLLLLLLLRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRLLLLLLLLLLL...

result:

ok Valid Solution (Length = 28888).

Test #84:

score: 0
Accepted
time: 0ms
memory: 3988kb

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: 1ms
memory: 3912kb

input:

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

output:

RRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRR...

result:

ok Valid Solution (Length = 31184).

Test #86:

score: 0
Accepted
time: 1ms
memory: 4096kb

input:

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

output:

RRLLLRRLLLRRLLLRRLLLRRLLLUUUUUDDDDDRRLLLRRLLLRRLLLRRLLLRRLLLRRLLLRRLLLRRLLLRRLLLRRLLLUUUUUUUDDDDDDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLL...

result:

ok Valid Solution (Length = 33326).

Test #87:

score: 0
Accepted
time: 0ms
memory: 3648kb

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: 0ms
memory: 4144kb

input:

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

output:

LRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLRRRRRRRRRRR...

result:

ok Valid Solution (Length = 55854).

Extra Test:

score: 0
Extra Test Passed