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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
#352677#7751. Palindrome PathGraphcityAC ✓3ms4064kbC++202.4kb2024-03-13 15:06:462024-03-13 15:06:47

Judging History

你现在查看的是最新测评结果

  • [2024-03-13 15:06:47]
  • 评测
  • 测评结果:AC
  • 用时:3ms
  • 内存:4064kb
  • [2024-03-13 15:06:46]
  • 提交

answer

#include<bits/stdc++.h>
#define For(i,a,b) for(int i=(a);i<=(b);++i)
#define Rof(i,a,b) for(int i=(a);i>=(b);--i)
using namespace std;
const int Maxn=30;
const int dx[4]={1,0,-1,0},dy[4]={0,1,0,-1};

int n,m,ch[35][35],sx,sy,tx,ty;
int vis[35][35]; pair<int,int> pr[35][35];
vector<char> ans;

inline int chk(int x,int y)
{return (x>=1 && x<=n && y>=1 && y<=m && ch[x][y]==1);}
inline void bfs()
{
    queue<pair<int,int>> q;
    vis[tx][ty]=1,q.emplace(tx,ty);
    while(!q.empty())
    {
        auto [x,y]=q.front(); q.pop();
        For(_,0,3)
        {
            int x1=x+dx[_],y1=y+dy[_];
            if(!chk(x1,y1) || vis[x1][y1]) continue;
            vis[x1][y1]=1,pr[x1][y1]=make_pair(x,y),q.emplace(x1,y1);
        }
    }
}
inline void MR(int op)
{
    int x1=sx,y1=sy,x2=tx,y2=ty,cnt=0;
    while(chk(x1,y1-op) && chk(x2,y2+op)) ans.push_back(op==1?'L':'R'),y1-=op,y2+=op,cnt++;
    if(!chk(x2,y2+op)) {For(i,1,cnt+1) ans.push_back(op==1?'R':'L');}
    else {ans.push_back(op==1?'L':'R'); For(i,1,cnt+1) ans.push_back(op==1?'R':'L');}
}
inline void MD(int op)
{
    int x1=sx,y1=sy,x2=tx,y2=ty,cnt=0;
    while(chk(x1-op,y1) && chk(x2+op,y2)) ans.push_back(op==1?'U':'D'),x1-=op,x2+=op,cnt++;
    if(!chk(x2+op,y2)) {For(i,1,cnt+1) ans.push_back(op==1?'D':'U');}
    else {ans.push_back(op==1?'U':'D'); For(i,1,cnt+1) ans.push_back(op==1?'D':'U');}
}
inline void dfs(int x,int y)
{
    vis[x][y]=1;
    For(_,0,3)
    {
        int x1=x+dx[_],y1=y+dy[_];
        if(!chk(x1,y1) || vis[x1][y1]) continue;
        if(x1==x+1) MD(1); if(x1==x-1) MD(-1);
        if(y1==y+1) MR(1); if(y1==y-1) MR(-1);
        sx=x1,sy=y1,dfs(x1,y1);
        if(x1==x+1) MD(-1); if(x1==x-1) MD(1);
        if(y1==y+1) MR(-1); if(y1==y-1) MR(1);
        sx=x,sy=y;
    }
}

int main()
{
    // freopen("1.in","r",stdin);

    cin>>n>>m;
    For(i,1,n) For(j,1,m) scanf("%1d",&ch[i][j]);
    cin>>sx>>sy>>tx>>ty; bfs();
    For(i,1,n) For(j,1,m) if(ch[i][j]==1 && !vis[i][j]) {puts("-1"); return 0;}
    memset(vis,0,sizeof(vis)); dfs(sx,sy);
    while(sx!=tx || sy!=ty)
    {
        auto [x,y]=pr[sx][sy];
        if(x==sx+1) MD(1); if(x==sx-1) MD(-1);
        if(y==sy+1) MR(1); if(y==sy-1) MR(-1);
        sx=x,sy=y;
    }
    for(auto i:ans) putchar(i);
    reverse(ans.begin(),ans.end());
    for(auto i:ans) putchar(i);
    putchar('\n');
    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: 1ms
memory: 3748kb

input:

2 2
11
11
1 1 2 2

output:

DRDUDRLDURDDRUDLRDUDRD

result:

ok Valid Solution (Length = 22).

Test #2:

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

input:

2 2
10
01
1 1 2 2

output:

-1

result:

ok No Solution.

Test #3:

score: 0
Accepted
time: 0ms
memory: 3596kb

input:

1 1
1
1 1 1 1

output:



result:

ok Valid Solution (Length = 0).

Test #4:

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

input:

5 4
1111
1111
1111
1111
1111
4 2 4 2

output:

UDDLLRRLLRRRDUDDUUDDDUUUDDDUUUURLUDUDDUDDDDUURLLDDDUUUDDDUUUURLLUDUDDUDDUDDDUDDUUDDDUUUDDDUUUULRUDUDDLLRRDDDUUUDDDUUUULLRRRUDUDDUDDUDDRLRLLDUUDLLRLRDDUDDUDDUDURRRLLUUUUDDDUUUDDDRRLLDDUDURLUUUUDDDUUUDDDUUDDUDDDUDDUDDUDULLRUUUUDDDUUUDDDLLRUUDDDDUDDUDULRUUUUDDDUUUDDDUUDDUDRRRLLRRLLDDU

result:

ok Valid Solution (Length = 282).

Test #5:

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

input:

5 5
11111
10101
11111
10101
11111
1 4 5 5

output:

RDDDDRLRRLLDUDDUURRRLLDDDUUUDDDDUUUURRRLLLRRRRLLLLDDDDRRRRRLLLLDUDDUURRRRRLLLLDDDUUUDDDDUUUURRDDDDRRDUDDUUDDDUUUDDDDUUUURLRDDDDDDDDRLRUUUUDDDDUUUDDDUUDDUDRRDDDDRRUUUUDDDDUUUDDDLLLLRRRRRUUDDUDLLLLRRRRRDDDDLLLLRRRRLLLRRRUUUUDDDDUUUDDDLLRRRUUDDUDLLRRLRDDDDR

result:

ok Valid Solution (Length = 254).

Test #6:

score: 0
Accepted
time: 0ms
memory: 3696kb

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: 3980kb

input:

5 4
1001
1101
1111
0011
0010
2 2 1 1

output:

UDRUDUUDDURUUUUDUUDDUUDDDLULLUUUDUUDDRULUULURDDUUDUUULLULDDDUUDDUUDUUUURUDDUUDURDU

result:

ok Valid Solution (Length = 82).

Test #8:

score: 0
Accepted
time: 1ms
memory: 3696kb

input:

5 3
101
111
100
111
100
4 1 2 2

output:

DULRLRRRLRLLUULRLRRUDRLRLLUDDDUULRRLUUDDDULLRLRDURRLRLUULLRLRRRLRLUD

result:

ok Valid Solution (Length = 68).

Test #9:

score: 0
Accepted
time: 1ms
memory: 3756kb

input:

5 5
01110
10110
11110
11011
11100
2 4 5 1

output:

DDLRLDULDUDDUULLRRLLLRDDLDDLLRRLLDUDDUUDDDUUUDDDLRDUDDUULLRRLLRRRDDUUDLLDDLLDDLLDUUDDRRRLLRRLLUUDDUDRLDDDUUUDDDUUDDUDLLRRLLDDLDDRLLLRRLLUUDDUDLUDLRLDD

result:

ok Valid Solution (Length = 150).

Test #10:

score: 0
Accepted
time: 0ms
memory: 3712kb

input:

5 3
011
111
110
111
011
3 1 2 1

output:

UUDDLRUUDDDLRUUDLUUULLRRULLRUDLLLRUUDDUUDDDLUUUULDDDUUDDUURLLLDURLLURRLLUUULDUURLDDDUURLDDUU

result:

ok Valid Solution (Length = 92).

Test #11:

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

input:

4 5
11111
11111
11111
11111
3 2 1 3

output:

UUUDDDLLRRLLRRRLLRRRUUURLUDUUDDRRLLUURRLLLUDRRLLLUUDDUUUDDDUUUUDLRULLRRUDUUDDLLRRRUULLRRRUDUUDDUUUDDDRLRRLLRRLLLULLRRUUUURRLLULLLRRLLRRLRDDDUUUDDUUDURRRLLUURRRLLDDUUDURRLLURLDUUUUDDDUUUDDUULLLRRDULLLRRUULLRRDDUUDULRUUURRRLLRRRLLRRLLDDDUUU

result:

ok Valid Solution (Length = 238).

Test #12:

score: 0
Accepted
time: 1ms
memory: 3752kb

input:

5 5
11111
10101
11111
10101
11111
2 5 1 1

output:

UUDDUUUDDDUUUUDDDDLLUULLLRRRLUULLLRRRLLLLRRRRLLLLUDUUDDUUUDDDUUUUDDDDLRLUULRLUULRLLRRUDUUDDUUUDDDUUUUDDDDLLLRRRLLLLRRRRUUUULLLLLLLLUUUURRRRLLLLRRRLLLDDDDUUUUDDDUUUDDUUDURRLLRLUULRLUULRLDDDDUUUUDDDUUUDDUUDULLLLRRRRLLLLRRRLLLUULRRRLLLUULLDDDDUUUUDDDUUUDDUU

result:

ok Valid Solution (Length = 254).

Test #13:

score: 0
Accepted
time: 0ms
memory: 3924kb

input:

4 5
11111
10000
11111
00001
1 3 4 5

output:

RRLLLLDDRRRRDDULLLLDUDUURRLLDDRRRRDDRRRRDDLLRRUUDUDLLLLUDDRRRRDDLLLLRR

result:

ok Valid Solution (Length = 70).

Test #14:

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

input:

3 5
10100
00010
00111
1 3 1 1

output:

-1

result:

ok No Solution.

Test #15:

score: 0
Accepted
time: 0ms
memory: 3696kb

input:

4 5
10001
11111
11100
11111
4 5 3 1

output:

LLDUDDUULLRRRLLRRRDUUDLLLUDUDDLDUDDUUDDUUUUDUDDUDDLRDUDDUULLRRUDUDDLLRRRLLRRRLLLLDUUDLLLLRRRLLRRRLLDDUDURRLLUUDDUDRLDDUDDUDUUUUDDUUDDUDLDDUDULLLDUUDRRRLLRRRLLUUDDUDLL

result:

ok Valid Solution (Length = 166).

Test #16:

score: 0
Accepted
time: 0ms
memory: 3712kb

input:

3 5
11111
10100
11111
1 2 3 5

output:

RDDRRRLRRLLRRRLLLRRRRLLLLUUDDRRUURRRLRRLLRRRLLLRDDRRRRDDRLLLRRRLLRRLRRRUURRDDUULLLLRRRRLLLRRRLLRRLRRRDDR

result:

ok Valid Solution (Length = 104).

Test #17:

score: 0
Accepted
time: 0ms
memory: 3608kb

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: 3964kb

input:

5 5
11111
11111
11111
11111
11111
1 3 5 2

output:

DDDDLLLRRRLLLRRRRDUDDUUDDDUUUDDDDUUUURLDDDDDUUDDDUUUDDDDUUUULLLRRRRDDDDRLRLLRLLDUDDUUDDDUUUDDDDUUUURLLDDDDDUDDUUDDDUUUDDDDUUUULRDDDDLLRRDUDDUUDDDUUUDDDDUUUUDDDDRLLLLRDDDDUUUUDDDDUUUDDDUUDDUDRRLLDDDDRLUUUUDDDDUUUDDDUUDDUDDDDDLLRUUUUDDDDUUUDDDUUDDUDLLRLLRLRDDDDRRRRLLLUUUUDDDDUUUDDDUUDDDDDLRUUUUDDDDUUU...

result:

ok Valid Solution (Length = 326).

Test #19:

score: 0
Accepted
time: 1ms
memory: 3628kb

input:

5 5
11111
10101
11111
10101
11111
5 1 2 3

output:

RRRRDUDUUDUUDUULLUDUUDDUUUDDDDUURLLLUUUDDDDUUDUUDUURLUDUUDDRRDUUDUURRUDUUDDUUUDDDUUUDDDDLLLLRRDUDUUDUUUUDUUDUDRRLLLLDDDDUUUDDDUUUDDUUDURRUUDUUDRRDDUUDULRUUDUUDUUDDDDUUULLLRUUDDDDUUUDDUUDULLUUDUUDUUDUDRRRR

result:

ok Valid Solution (Length = 204).

Test #20:

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

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: 1ms
memory: 3688kb

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: 3680kb

input:

5 5
10101
11111
10101
11111
11111
3 1 2 4

output:

DDLRLRRLRRLRRUUUUDRLRRLLDDLRRRRLLRRRLLLLRRUUUDRRRLLLRRRLLLLUDLRLRRLRRLRRDDDRLRRLLRRRLLLRRRLLLLUUULRLRRLRRRRLRRLRLUUULLLLRRRLLLRRRLLRRLRDDDRRLRRLRRLRLDULLLLRRRLLLRRRDUUURRLLLLRRRLLRRRRLDDLLRRLRDUUUURRLRRLRRLRLDD

result:

ok Valid Solution (Length = 210).

Test #23:

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

input:

5 5
00001
11111
01110
01111
01111
1 5 5 2

output:

DLDDDLLLRRRDUDLLDUDDUUDDDUUULDDDDUDDUUDDDUUULLRLLRRDDDLLRRDUDDUUDDDUUULLLRRRRDUDLDDDLLLLDDDLDUDRRRRLLLUUUDDDUUDDUDRRLLDDDRRLLRLLUUUDDDUUDDUDDDDLUUUDDDUUDDUDLLDUDRRRLLLDDDLD

result:

ok Valid Solution (Length = 172).

Test #24:

score: 0
Accepted
time: 1ms
memory: 3976kb

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: 3744kb

input:

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

output:

UUUUUUUDDDDDDDUUUUUUUDDDDDDDDUUUUUUUDDDDDDDDLLRRRDUDDUUDDUUUDDUUUDDUUUDDUUUDDUUUDDUUUDDUUURLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDRRLLUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUDDDDDDDDUUUUUUUDDDDDDDDRRRLLLDUDDUUDDUUUDDUUUDDUUULLRRRDDUUUDDUUUDDUUUDDUUURRRLLLUDUUDDUUUDDDRRRRLLLLUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDD...

result:

ok Valid Solution (Length = 2246).

Test #26:

score: 0
Accepted
time: 0ms
memory: 3968kb

input:

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

output:

LUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUDDDDDDDDDDURLLLUUUUUUUUDDDDDDDDDDUDUUDUURLDUUDUURLDUUDUURLDUUDUURLLLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUDDDDDDDDDDURLDUUDUURLDUUDUURLDUUDUURLDUUDUURRUDUUDDUUUDDDUUUUDDDDUUUUUD...

result:

ok Valid Solution (Length = 768).

Test #27:

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

input:

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

output:

LLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRUURLRLLRLLRLLRLLRLLRLLRLLRLLUULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRRLRLLRLLRLLRLLRLLRLLRLLRLLDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLRRRR...

result:

ok Valid Solution (Length = 1204).

Test #28:

score: 0
Accepted
time: 1ms
memory: 3628kb

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: 3ms
memory: 3976kb

input:

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

output:

UUUDDDUUUDDDDRLLUDUUDDRRLLLDUDDUUDDDUUUDDDUUUURDURRUUUDDDDDUDDUUDDDUUUDDDUUUULLDUUDLLLUUDDUUUDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDUUUDDDDRDUDDUUUDUUDDLDUDDUUDDDUUUDDDUUUURLDDDUUUUDDDUUUURRUDDDDUUUURRLLLLDDDUUUUDDDUUUUDDDUUUUUDRRRRRUDUUDDUUUDDDLLUUDDLUUUDDDUUUDDDDUUUDDDDUUUDDDDRDUDDUURDUDDUULLUUUDDD...

result:

ok Valid Solution (Length = 600).

Test #30:

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

input:

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

output:

DDDLRLLRRLLLRRRLLLRRRRLLLRRRRLLLRRRRDULLLRRRDUDUUDUUDUUDUUDUUDUULDLDDDLLLRRRRDDULLDDDLRDUUDLDUULDUDUUDUULRDUUDUULDLDUDUULLLRRRDUULLLRRRRLLLRRRRDDUULLLRRRRLLLLLDDDDDDDDDUUDUULLRRDUDLDUULDUUDUUDDLRDUUDUUDUUDUULDUDLRDUULLRRLLLRRRDLDDLLLRRRDUULLLRRRDDLDDDLRDUUDUULLLRRRRDUDUUDUULLLRRRRDULLRRDDDDDDDLDLLLL...

result:

ok Valid Solution (Length = 656).

Test #31:

score: 0
Accepted
time: 0ms
memory: 3640kb

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: 3924kb

input:

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

output:

DUDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDUUUUUUDDDDDUUUUUURLUDUUDDUUDDDUUDDDUUDDDUUDDDUUDDDRRLLDUDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDUUUUUUDDDDDUUUUUURRRLLLUDUUDDUUDDDUUDDDUUDDDUUDDDUUDDDRRRRLLLLDUDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDUUUUUUDDDDDUUUUUURRRRRLLLLLUDUUDDUUDDDUUDDDUUDDDUUDDDUUDDDRRRRRRLLLLLLDUDDUUDDD...

result:

ok Valid Solution (Length = 1870).

Test #33:

score: 0
Accepted
time: 0ms
memory: 3972kb

input:

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

output:

UDDUDDUDDUDDUDDUDDUDDDULLLLLRRRRRLLLLLLRRRRRRUDDDULLLLLLLRRRRRRRLLLLLLLLRRRRRRRRUDDDULLLLLLLLLRRRRRRRRRLDDUUDDDUUULLLLLLLLLRRRRRRRRRLDDDDUUUUDDDDDUUUUULLLLLLLLLRRRRRRRRRLDDDDDDUUUUUUDDDDDDDUUUUUUULLLLLLLLLRRRRRRRRRLDDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUULLLLLLLLLRRRRRRRRRLLLUDUDDUDDUDDUDDUDDUDDDDDUUULLLLL...

result:

ok Valid Solution (Length = 1852).

Test #34:

score: 0
Accepted
time: 0ms
memory: 3704kb

input:

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

output:

LLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRUURLRLLRLLRLLRLLRLLRLLRLLRLLUULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRRLRLLRLLRLLRLLRLLRLLRLLRLLDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLL...

result:

ok Valid Solution (Length = 1212).

Test #35:

score: 0
Accepted
time: 0ms
memory: 3928kb

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: 3668kb

input:

5 10
1001011101
1111111111
1000011001
1111111111
1101110010
4 3 4 7

output:

LLLRRRDLRLLRRDULLLRRRRLLLRRRRLLLRRRRDDULLLRRRRDUDDUUDDDUUUDRLRRLLDURLDDRLDDDUUUDDDUUUUDRRRRRLLLLLRRRRRRLLLLLLDUDRRRRRRLLLLLLLRRRRRRLLLLLLLRRRRRRLLLLLLLDDDLRDUDRLDUDDUUDDDUUUDDDUUUUDLRLLRRLLLRRRLLLRRRRLLLRRRRDLRDDUUDDDUUULLRRDLLLRRRRLLLRRRRDDRLRRLLRRRLLLRRRRLLLLRRRRRLLLLLLLLRRRRDRLRRLLDURRRRRRLLLLLLL...

result:

ok Valid Solution (Length = 654).

Test #37:

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

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: 3708kb

input:

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

output:

UUDDDRUUDDDUUDDDUUDDDLUUDDUUDDDRRRDUDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDUUUUUUUUDLUDUUDDDULDDDDDUUUUUDDDDDDUUUUUULUDLUUDDUUDDDUUDDDUUDDDUUDDDUUDDDUUDDDDULDUDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDDUUUUUULUUDDUUDDDUUDDDUUDDDUUDDDUUDDDUUDDDDULLUUDDLDUDDUURLDDDUUUDDDDUUUURRUUDDDUDDUULDD...

result:

ok Valid Solution (Length = 1268).

Test #39:

score: 0
Accepted
time: 0ms
memory: 3636kb

input:

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

output:

UUUUUUUDDDDDDDDLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRDUDDUUDDUUUDDUUUDDUUUDDUUUDDUUUDDUUUDDUUURLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUDDDDDDDDRLLDDUUDDUUUDDUUUDDUUUDDUUUDDUUUDDUUUDDUUURLLUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDU...

result:

ok Valid Solution (Length = 2766).

Test #40:

score: 0
Accepted
time: 0ms
memory: 3644kb

input:

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

output:

UUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDULRLLRRUUUUUUUUUDDDDDDDDDULLLRRRLLLLRRRRUUUUUUUUUDDDDDDDDDULLLLLRRRRRLLLLLLRRRRRRUUUUUUUUUDDDDDDDDDULLLLLLLRRRRRRRLLLLLLLRRRRRRRRUUUUUUUUUDDDDDDDDDULLLLLLLRRRRRRRRRLUULLLLLLLRRRRRRRRRLUULLLLLLLRRRRRRRRRLUULLLLLLL...

result:

ok Valid Solution (Length = 1830).

Test #41:

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

input:

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

output:

LLLLRRRRLLLLLRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRDDRLRRLLRRRLLLRRRRLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLDULRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRLLLLLRRRRRRUURLRRLLRRRLLLRRRRLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLRRRRLLLLLUULRLLRRLLLRRRLLLLRRRRLLLLLR...

result:

ok Valid Solution (Length = 1694).

Test #42:

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

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: 1ms
memory: 3748kb

input:

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

output:

DDDDLRRDUDUUDDRLRRLLRRRLLLRRRRLLLLDUDUULRRLRRDUDUUDUUDUULRRLRRRLRRLLRRRLLLDDDDUURRRRLLLLDUDUUDUUDUULRRLRRLRRLRRDURLLRDRLRRLLRRRLLLDURLRRLLDDDRRRRRRLLLLLLRRRRRRRLLLLLLLDDDDLRRDDLRRRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLDUDUULRDUDUURRRRRRRRLLLLLLLLLDDUUDUUDUULRDULRRDUULRRRRRRRRRLLL...

result:

ok Valid Solution (Length = 1186).

Test #44:

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

input:

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

output:

UDDUDDUDDLLLRRRLLLLRRRRLLLLRRRRRLLLLRRRRRDULLLLRRRRRDUDUULLLRRRLLLLRRRRUDDUDDUDDRLLRDUDUUDUUDUUUDRLRRLLDUUDUULLLLRRRRRRLDUUDUULLLRRRLLLLRRRRUDDURLDUDUULRRLUDRLRRLLUDUDDUDDUDDUDDUDDRRLLUDDRRRLLLDUURRRRLLLLUDDDUUDUUUDLLLLRRRRUDLLLRRRDUUDUUDUUDUURRRRLLLLUDDDUDUURLUDDRRRRLLLLLUDRLDUDUUDUULRLLRRDUULLRRLL...

result:

ok Valid Solution (Length = 1268).

Test #45:

score: 0
Accepted
time: 0ms
memory: 3644kb

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: 3944kb

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:

UUUUUUUDDDDDDDDUUUUUUUDDDDDDDDUUUUUUUDDDDDDDDUUUUUUUDDDDDDDDRRRRDUDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDDUUUUUUDDDDDDDUUUUUUUDDDDDDDDUUUUUUUUDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDD...

result:

ok Valid Solution (Length = 13870).

Test #47:

score: 0
Accepted
time: 1ms
memory: 3944kb

input:

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

output:

RUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUUDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDDUUUUUUUUUUUUUUD...

result:

ok Valid Solution (Length = 9736).

Test #48:

score: 0
Accepted
time: 1ms
memory: 3976kb

input:

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

output:

UURLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRLLLLLLLLLRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLUULRL...

result:

ok Valid Solution (Length = 11178).

Test #49:

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

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: 3688kb

input:

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

output:

DDDLLLLRRRRRDDRLRRLLUUUUUULLLLRRRRRLLLLRRRRRDDUURLRRLLRRRLLLUULLLLRRRRRLLLLRRRRRLLLLRRRRRRLRRLLRRRLLLUULLLLRRRRRLLLLRRRRRLLLLRRRRRRLUULLLLRRRRRRLUULLLLRRRRRUURLURLDRRRLLLURRRLLLDRRRRRLLLLLRRRRRRLLLLLLURLDDDDDDDLLLLRRRRRDDDDLLLLRRRRRDDLLLLRRRRRDDLLLLRRRRRDDDDLLLLRRRRRLLLLRRRRRLLLLRRRRRRLRRLLRRRLLLRRR...

result:

ok Valid Solution (Length = 5996).

Test #51:

score: 0
Accepted
time: 1ms
memory: 3948kb

input:

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

output:

LRRUDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUUDDDDDDDDDDUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUDDDDDDDDD...

result:

ok Valid Solution (Length = 10266).

Test #52:

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

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: 3992kb

input:

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

output:

LLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRLLLLLLLRRRRRRRRDUDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDDUUUUUUDDDDDDDUUUUUUUDDDDDDDDUU...

result:

ok Valid Solution (Length = 10164).

Test #54:

score: 0
Accepted
time: 1ms
memory: 3632kb

input:

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

output:

UDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDUUUUUUUUUDDDDDDDDDDRRRRRRRRRRRRRRRRRRRLDUDDUURLDDDUUUDDDDU...

result:

ok Valid Solution (Length = 10780).

Test #55:

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

input:

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

output:

RRRRRRRRRRRRRRDUDUULLLLLLLLLLLLLLLLLLLDUDUURRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLUDUDDRRRRRRRRRRRRRRRRRRRUDUDDLLLLLLLLLLLLLLLLLLLUDUDDRRRRRRRRRRRRRRRRRRRUDUDDLLLLLLLLLLLLLLLLLLLUDDURRRRRRRRRRRRRRRRRRRDUDUULLLLLLLLLLLLLLLLLLLDUDUURRRRRLLLLLUDUDDRRRRRRRRRRRRRRRRRRRUDDURRRRRRRRRRRRRRRRRRRDDUDULLLLLRRRR...

result:

ok Valid Solution (Length = 530).

Test #56:

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

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: 3768kb

input:

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

output:

UUUDDDDUUUDDDDLLLLLLLLLRRRRRRRRRUUUDDDDUUUDDDDLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRR...

result:

ok Valid Solution (Length = 8120).

Test #58:

score: 0
Accepted
time: 1ms
memory: 3668kb

input:

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

output:

DDLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRRDURLDDUUDDDUUULRDUDDUUDDDUUUDDDDUUUUDDDDUUUUUDDDDUUUUU...

result:

ok Valid Solution (Length = 8092).

Test #59:

score: 0
Accepted
time: 0ms
memory: 3644kb

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: 3712kb

input:

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

output:

UUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRDUDDUUDDDUUUDD...

result:

ok Valid Solution (Length = 21760).

Test #61:

score: 0
Accepted
time: 1ms
memory: 4004kb

input:

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

output:

LLLRRRRUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUUDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUDDDDDDDDDDDD...

result:

ok Valid Solution (Length = 15020).

Test #62:

score: 0
Accepted
time: 1ms
memory: 3760kb

input:

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

output:

LLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRDDRLRLLRLLRLLRLLRLLRLLRLLRLLRLL...

result:

ok Valid Solution (Length = 8830).

Test #63:

score: 0
Accepted
time: 1ms
memory: 3636kb

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: 3712kb

input:

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

output:

LLLLLLLLLLLLLLRRRRRRRRRRRRRRRDDDDDDDDLLLLLLLLLLLLLLRRRRRRRRRRRRRRRDUDDUUDDDUUUDDDDUUUUDDDDRLRRLLDDLLLLLLLLLLLLLLRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRLRRLLRRRLLLDUDDUURRRRLLLLDDRRRRRLLLLLDUDDUUDDDUUULRDDDDUUUULLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRLLLLRRRRRLLLLLRRRRRLLLLLLDUDDUULLLLLLLLLLLLLLRRRR...

result:

ok Valid Solution (Length = 9456).

Test #65:

score: 0
Accepted
time: 1ms
memory: 3740kb

input:

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

output:

UUUUUUUUUDDDDDDDDDLLLLRRRRUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUUDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDLLLLLRRRRRUDUUDDLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLL...

result:

ok Valid Solution (Length = 13642).

Test #66:

score: 0
Accepted
time: 1ms
memory: 3700kb

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: 2ms
memory: 3812kb

input:

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

output:

UUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDUUUUDDDDDLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLRRRRRRRRR...

result:

ok Valid Solution (Length = 56908).

Test #68:

score: 0
Accepted
time: 0ms
memory: 4048kb

input:

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

output:

UUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDDURRUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDD...

result:

ok Valid Solution (Length = 34410).

Test #69:

score: 0
Accepted
time: 1ms
memory: 3964kb

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: 1ms
memory: 3972kb

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: 3808kb

input:

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

output:

UUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRLLLLLLLL...

result:

ok Valid Solution (Length = 28554).

Test #72:

score: 0
Accepted
time: 0ms
memory: 4048kb

input:

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

output:

UUUUUDDDDDDLLLLRRRRRUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDUUUUUDDDDDDLLLLRRRRRLLLLRRRRRDULLLLRRRRRLLLLRRRRRUUUUUDDDDDDLRLLRRLLLRRRLLLLRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRLLLLRRRRRDUDDUUDDDUUUDDDUUUUDDDUUUULDUDDUULLLLRRRRRD...

result:

ok Valid Solution (Length = 23258).

Test #73:

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

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: 4060kb

input:

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

output:

UUUUUUUDDDDDDDDUUUUUUUDDDDDDDDUUUUUUUDDDDDDDDUUUUUUUDDDDDDDDUUUUUUUDDDDDDDDUUUUUUUDDDDDDDDUUUUUUUDDDDDDDDUUUUUUUDDDDDDDDUUUUUUUDDDDDDDDUUUUUUUDDDDDDDDLLLLLLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRRRRRRRRDUDDUUDDDUUUDDDDUUUUDDDDDUUUUUDDDDDDUUUUUUDDDDDDDUUUUUUUDDDDDDDDUUUUUUUUDDDDDDDDDUUUUUUUUUDDDDDDDDD...

result:

ok Valid Solution (Length = 40386).

Test #75:

score: 0
Accepted
time: 1ms
memory: 3672kb

input:

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

output:

LLLLRRRRDDDDDDLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRR...

result:

ok Valid Solution (Length = 16238).

Test #76:

score: 0
Accepted
time: 1ms
memory: 3736kb

input:

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

output:

LLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLL...

result:

ok Valid Solution (Length = 24386).

Test #77:

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

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: 3724kb

input:

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

output:

UUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUUDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUUDDDDDD...

result:

ok Valid Solution (Length = 7506).

Test #79:

score: 0
Accepted
time: 1ms
memory: 3740kb

input:

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

output:

UDDUDDUDDUDDUDDUDDUDDUDDUDDLLLRRRUDDUDDUDDUDDUDDUDDUDDUDDUDDUDDLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRULLLLLLLLLLRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRUDDLRLLRRLLLRRRLLLLRRRRLLLLLRRRRRLLLLLLRRRRRRLLLLLLLRRRRRRRLLLLLLLLRRRRRRRRLLLLLLLLLRRRRRRRRRLLLLLLLLLLRRRRRRRRRRLLL...

result:

ok Valid Solution (Length = 12512).

Test #80:

score: 0
Accepted
time: 1ms
memory: 3704kb

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: 3908kb

input:

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

output:

UUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDD...

result:

ok Valid Solution (Length = 71268).

Test #82:

score: 0
Accepted
time: 1ms
memory: 3788kb

input:

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

output:

UUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUUDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDD...

result:

ok Valid Solution (Length = 57216).

Test #83:

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

input:

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

output:

DDRLRRLLRRRLLLRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLRRRRRRRLLLLLLLRRRRRRRRLLLLLLLLRRRRRRRRRLLLLLLLLLRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLLRRRRRRRRRRRRLLLLLLLLLLLLRRRRRRRRRRRRRLLLLLLLLLLLLLRRRRRRRRRRRRRRLLLLLLLLLLLLLLRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRLLLLLLLLL...

result:

ok Valid Solution (Length = 28888).

Test #84:

score: 0
Accepted
time: 1ms
memory: 3972kb

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: 3660kb

input:

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

output:

LRRDDLRRLRRLRRDDDDLRRDDLRRLRRLRRLRRLRRLRRRLRRLLDUDDUULRRLRRDUDDUURLDRRLLDDUUUDDUUUDDUUULRRLRRDUDDUURLRRLLRRRLLLRRRRLLLLRRRRRLLLLLDDDDLRRLRRRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLLRRDUDDUULRRLRRRRRRLLLLRRRRRLLLLLRRRRRRLLLLLLDUDDUUDDUUUDDUUULRRLRRLRRLRRLRRLRRRLDUDDUULRRDUDDUUDDUUUDDUUURLDUDDUULRRDUDDUURLDUDDUU...

result:

ok Valid Solution (Length = 21260).

Test #86:

score: 0
Accepted
time: 1ms
memory: 4064kb

input:

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

output:

UDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLRRRRRRRRRRRLLLLLLLLLLRRR...

result:

ok Valid Solution (Length = 43474).

Test #87:

score: 0
Accepted
time: 0ms
memory: 3608kb

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: 1ms
memory: 3784kb

input:

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

output:

UDUUDDUUUDDDUUUUDDDDUUUUUDDDDDUUUUUUDDDDDDUUUUUUUDDDDDDDUUUUUUUUDDDDDDDDUUUUUUUUUDDDDDDDDDUUUUUUUUUUDDDDDDDDDDUUUUUUUUUUUDDDDDDDDDDDUUUUUUUUUUUUDDDDDDDDDDDDUUUUUUUUUUUUUDDDDDDDDDDDDDUUUUUUUUUUUUUUDDDDDDDDDDDDDDUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDUUUUUUUUUUUUUUUUUDDDDDDDDDDD...

result:

ok Valid Solution (Length = 57590).

Extra Test:

score: 0
Extra Test Passed