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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
#638983#7751. Palindrome Pathzzuqy#AC ✓46ms31284kbC++143.1kb2024-10-13 17:30:332024-10-13 17:30:33

Judging History

你现在查看的是最新测评结果

  • [2024-10-13 17:30:33]
  • 评测
  • 测评结果:AC
  • 用时:46ms
  • 内存:31284kb
  • [2024-10-13 17:30:33]
  • 提交

answer

#include<bits/stdc++.h>
#define N 39
using namespace std;
bool vst[N][N];
int dx[4]={-1,1,0,0};
int dy[4]={0,0,-1,1};
char dir[4]={'U','D','L','R'};
char c[N][N];
string ans,ans2,mid; 
int n,m;
bool ok(int x,int y){
	//cout<<x<<" "<<y<<endl;
	if(x<1||x>n||y<1||y>m)return 0;
	//cout<<"fuck"<<endl;
	if(c[x][y]=='0')return 0;
	return 1;
}
void dfs(int x,int y){
	vst[x][y]=1;
	for(int k=0;k<4;k++){
		int nx=x+dx[k],ny=y+dy[k];
		if(!ok(nx,ny))continue;
		if(vst[nx][ny])continue;
		ans+=dir[k];
		dfs(nx,ny);
		ans+=dir[k^1];
	}
}
void move(int &x,int &y,int dir){
	int nx=x+dx[dir],ny=y+dy[dir];
	//cout<<nx<<" "<<ny<<endl;
	if(ok(nx,ny))x=nx,y=ny;
	//cout<<x<<" "<<y<<endl;
}
void move(int &x,int &y,char dir){
	if(dir=='U')move(x,y,0);
	if(dir=='D')move(x,y,1);
	if(dir=='L')move(x,y,2);
	if(dir=='R')move(x,y,3);
}
int sx,sy,tx,ty;
struct node{
	int x1,y1,x2,y2;
	
	bool operator ==(const node&a){
		return x1==a.x1&&y1==a.y1&&x2==a.x2&&y2==a.y2;
	}
	bool operator !=(const node&a){
		return x1!=a.x1||y1!=a.y1||x2!=a.x2||y2!=a.y2;
	}
};
node f[N][N][N][N];
int g[N][N][N][N]; 
int main(){
	//freopen("1.in","r",stdin);
	cin>>n>>m;
	for(int i=1;i<=n;i++)
		for(int j=1;j<=m;j++){
			cin>>c[i][j];
		}
	cin>>sx>>sy>>tx>>ty;
	dfs(tx,ty);
	for(int i=1;i<=n;i++)
		for(int j=1;j<=m;j++){
			if(c[i][j]=='1'&&vst[i][j]==0){
				cout<<-1;
				return 0;
			}
		}
	reverse(ans.begin(),ans.end());
	for(auto i:ans)move(sx,sy,i);
	//cout<<sx<<" "<<sy<<" "<<tx<<" "<<ty<<endl;
	//cout<<ans<<endl;
	
	queue<node>q;
	q.push((node){sx,sy,tx,ty});
	while(!q.empty()){
		auto now=q.front();q.pop();
		int x=now.x1,y=now.y1,lx=now.x2,ly=now.y2;
		//cout<<x<<" "<<y<<" "<<lx<<" "<<ly<<endl;
		for(int k=0;k<4;k++){
			int nx=now.x1,ny=now.y1;
			move(nx,ny,k);
			if(!ok(lx+dx[k],ly+dy[k])){
				if(f[nx][ny][lx][ly]==(node){0,0,0,0}){
					f[nx][ny][lx][ly]=(node){x,y,lx,ly};
					g[nx][ny][lx][ly]=k;
					q.push((node){nx,ny,lx,ly});
				}
			}
			if(ok(lx-dx[k],ly-dy[k])){
				if(f[nx][ny][lx-dx[k]][ly-dy[k]]==(node){0,0,0,0}){
					f[nx][ny][lx-dx[k]][ly-dy[k]]=(node){x,y,lx,ly};
					g[nx][ny][lx-dx[k]][ly-dy[k]]=k;
					q.push((node){nx,ny,lx-dx[k],ly-dy[k]});
				}
			}
		}
	}
	//cout<<"OK"; 
	//cout<<sx<<" "<<sy<<" "<<tx<<" "<<ty<<endl;
	int x1=0,x2=0,y1=0,y2=0;
	for(int i=1;i<=n;i++)
		for(int j=1;j<=m;j++){
			if(ok(i,j)&&f[i][j][i][j]!=(node){0,0,0,0}){
				x1=i,y1=j,x2=i,y2=j;mid="";
			}
			for(int k=0;k<4;k++){
				if(ok(i,j)&&ok(i+dx[k],j+dy[k])&&f[i][j][i+dx[k]][j+dy[k]]!=(node){0,0,0,0}){
					x1=i,y1=j,x2=i+dx[k],y2=j+dy[k];
					mid=dir[k];
				} 
			}
		}
	//cout<<x1<<" "<<y1<<" "<<x2<<" "<<y2<<endl;
	if(x1==0){
		cout<<-1;
		return 0;
	}
	//cout<<"OK";
	while(!(x1==sx&&y1==sy&&x2==tx&&y2==ty)){
		ans2+=dir[g[x1][y1][x2][y2]];
		auto tmp=f[x1][y1][x2][y2];
		//cout<<x1<<" "<<y1<<" "<<x2<<" "<<y2<<endl;
		x1=tmp.x1;y1=tmp.y1;x2=tmp.x2;y2=tmp.y2;
	}
	reverse(ans2.begin(),ans2.end());
	ans+=ans2;
	ans2=ans;
	reverse(ans2.begin(),ans2.end());
	ans+=mid+ans2;
	cout<<ans;
	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: 0ms
memory: 3596kb

input:

2 2
11
11
1 1 2 2

output:

DRUDLUDRLRDULDURD

result:

ok Valid Solution (Length = 17).

Test #2:

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

input:

2 2
10
01
1 1 2 2

output:

-1

result:

ok No Solution.

Test #3:

score: 0
Accepted
time: 0ms
memory: 3500kb

input:

1 1
1
1 1 1 1

output:


result:

ok Valid Solution (Length = 0).

Test #4:

score: 0
Accepted
time: 1ms
memory: 5824kb

input:

5 4
1111
1111
1111
1111
1111
4 2 4 2

output:

DDDRUUUULLDDDDLUUUUDDDDRUUUURRDDDDLUUUUDDDDLLRRRLRRRLLDDDDUUUULDDDDRRUUUURDDDDUUUULDDDDLLUUUURDDD

result:

ok Valid Solution (Length = 97).

Test #5:

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

input:

5 5
11111
10101
11111
10101
11111
1 4 5 5

output:

DDDDRRUULRUULRRRDDLRDDLRUUUULLDDDDLLUUUUDDDDRRRRLRRRRDDDDUUUULLDDDDLLUUUURLDDRLDDRRRLUURLUURRDDDD

result:

ok Valid Solution (Length = 97).

Test #6:

score: 0
Accepted
time: 1ms
memory: 5804kb

input:

5 3
111
100
111
001
111
4 3 3 2

output:

LUURRLLDDRRDDLLRRUULLRUURDDLDDRUURLLUURRLLDDRRDDLLRRUUL

result:

ok Valid Solution (Length = 55).

Test #7:

score: 0
Accepted
time: 1ms
memory: 5684kb

input:

5 4
1001
1101
1111
0011
0010
2 2 1 1

output:

UULLULDDDUUURUDDRDURDDRUUDLLUUDDUDDUULLDUURDDRUDRDDURUUUDDDLULLUU

result:

ok Valid Solution (Length = 65).

Test #8:

score: 0
Accepted
time: 1ms
memory: 5972kb

input:

5 3
101
111
100
111
100
4 1 2 2

output:

LDURRUULLRRUDDDDULRUUULLDUDLLUUURLUDDDDURRLLUURRUDL

result:

ok Valid Solution (Length = 51).

Test #9:

score: 0
Accepted
time: 0ms
memory: 3780kb

input:

5 5
01110
10110
11110
11011
11100
2 4 5 1

output:

DDLLDDLUUULRDDDRRLUURUULRDDRDUUUDDLLDDRLRDDLLDDUUUDRDDRLUURUULRRDDDRLUUULDDLLDD

result:

ok Valid Solution (Length = 79).

Test #10:

score: 0
Accepted
time: 0ms
memory: 3784kb

input:

5 3
011
111
110
111
011
3 1 2 1

output:

UULULDURDDDDLUDRUUURDDULRUUDLDUURLUDDRUUURDULDDDDRUDLULUU

result:

ok Valid Solution (Length = 57).

Test #11:

score: 0
Accepted
time: 1ms
memory: 5828kb

input:

4 5
11111
11111
11111
11111
3 2 1 3

output:

UUULDDDLUUUDDDRUUURRDDDRUUUDDDLUUULDDDUUUDDDLLRRRRLRRRRLLDDDUUUDDDLUUULDDDUUURDDDRRUUURDDDUUULDDDLUUU

result:

ok Valid Solution (Length = 101).

Test #12:

score: 0
Accepted
time: 1ms
memory: 5836kb

input:

5 5
11111
10101
11111
10101
11111
2 5 1 1

output:

UUUULLDDRLDDLLUURLUURLDDDDRRRLUUUURRDDDDLUUURULLLDLDLLLURUUULDDDDRRUUUULRRRDDDDLRUULRUULLDDLRDDLLUUUU

result:

ok Valid Solution (Length = 101).

Test #13:

score: 0
Accepted
time: 1ms
memory: 5632kb

input:

4 5
11111
10000
11111
00001
1 3 4 5

output:

DRRRRDDLLLLRRRRUULLLLUDDRRRRDUDRRRRDDULLLLUURRRRLLLLDDRRRRD

result:

ok Valid Solution (Length = 59).

Test #14:

score: 0
Accepted
time: 0ms
memory: 3856kb

input:

3 5
10100
00010
00111
1 3 1 1

output:

-1

result:

ok No Solution.

Test #15:

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

input:

4 5
10001
11111
11100
11111
4 5 3 1

output:

DLUULLLRRDDLLDURRUURRLDDRDUUULLDLLDDRRLRRDDLLDLLUUUDRDDLRRUURRUDLLDDRRLLLUULD

result:

ok Valid Solution (Length = 77).

Test #16:

score: 0
Accepted
time: 0ms
memory: 3932kb

input:

3 5
11111
10100
11111
1 2 3 5

output:

RRDDLLRRRRUULRDDLLUULLDDRRRRLRRRRDDLLUULLDDRLUURRRRLLDDRR

result:

ok Valid Solution (Length = 57).

Test #17:

score: 0
Accepted
time: 0ms
memory: 3532kb

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: 3880kb

input:

5 5
11111
11111
11111
11111
11111
1 3 5 2

output:

DDDDLUUUULDDDDLUUUUDDDDRUUUURDDDDRRUUUUDDDDLUUUUDDDDLLLRRRRLRRRRLLLDDDDUUUULDDDDUUUURRDDDDRUUUURDDDDUUUULDDDDLUUUULDDDD

result:

ok Valid Solution (Length = 119).

Test #19:

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

input:

5 5
11111
10101
11111
10101
11111
5 1 2 3

output:

DRRUUUULLDDLLUURLDDDDRLUURRRLUURRDDDDLLUUUUDDDLLDRRLRRDLLDDDUUUULLDDDDRRUULRRRUULRDDDDLRUULLDDLLUUUURRD

result:

ok Valid Solution (Length = 103).

Test #20:

score: 0
Accepted
time: 1ms
memory: 5800kb

input:

5 5
11111
10000
11111
00001
11111
4 5 5 3

output:

LLDDRRRRDDLLLLRRRRUULLLLUURRRRLLLLDDRRRRDDLDDRRRRDDLLLLRRRRUULLLLUURRRRLLLLDDRRRRDDLL

result:

ok Valid Solution (Length = 85).

Test #21:

score: 0
Accepted
time: 0ms
memory: 3624kb

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: 3800kb

input:

5 5
10101
11111
10101
11111
11111
3 1 2 4

output:

RUUULDLUDDDDUUURURRDRUDDDLRDUUULULDDDDULLRUUUDRRRLRRRDUUURLLUDDDDLULUUUDRLDDDURDRRURUUUDDDDULDLUUUR

result:

ok Valid Solution (Length = 99).

Test #23:

score: 0
Accepted
time: 1ms
memory: 5800kb

input:

5 5
00001
11111
01110
01111
01111
1 5 5 2

output:

DDDLUUULDLUDRDDLDURUUURDDDRRLUUUDDDLLLRRRLRRRLLLDDDUUULRRDDDRUUURUDLDDRDULDLUUULDDD

result:

ok Valid Solution (Length = 83).

Test #24:

score: 0
Accepted
time: 0ms
memory: 3556kb

input:

5 5
01011
10111
11011
10101
01110
4 1 2 3

output:

-1

result:

ok No Solution.

Test #25:

score: 0
Accepted
time: 1ms
memory: 6880kb

input:

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

output:

DDRUUUUUUUUULDDDDDDLDDDLUUUUUUUUURDDDDDUUUUULDDDDDDDDDRUUURUUUUUURRDDDDDDDDDRUUUUUUUUURDDDDDDDDDRUUUUUUUUUDDDDDDDDDLUUUUUUUUULDDDDDDDDDLUUUUUUUUULDDDDDDDDDLUUUUUUUUUDDDDDDDDDLLRRRRRRRLRRRRRRRLLDDDDDDDDDUUUUUUUUULDDDDDDDDDLUUUUUUUUULDDDDDDDDDLUUUUUUUUULDDDDDDDDDUUUUUUUUURDDDDDDDDDRUUUUUUUUURDDDDDDDDD...

result:

ok Valid Solution (Length = 367).

Test #26:

score: 0
Accepted
time: 1ms
memory: 6084kb

input:

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

output:

DRRUUUUUUUULLUDDDRLDDRLDDLLLRUULRRLUULRRLUULRRLUDDDDDDDDDLRRLUURRRLUUUUUURRUDDDDDDDDDLLUUUUUUUUURDDDDDDDDDLLULLDDDDDDDDDRUUUUUUUUULLDDDDDDDDDURRUUUUUULRRRUULRRLDDDDDDDDDULRRLUULRRLUULRRLUURLLLDDLRDDLRDDDULLUUUUUUUURRD

result:

ok Valid Solution (Length = 217).

Test #27:

score: 0
Accepted
time: 1ms
memory: 6292kb

input:

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

output:

LLLLLLLLDDRRRRRRRRRDDLLLLLLLLLRRRRRRRRRUULLLLLLLLLUURRRRRRRRRUULLLLLLLLLUURRRRRRRRRUDLLLLLLLLLDDRRRRRRRRRDDLRLUULLLLLLLLLUUDDRRRRRRRRRUDDLLLLLLLLLDUDLLLLLLLLLDDURRRRRRRRRDDUULLLLLLLLLUULRLDDRRRRRRRRRDDLLLLLLLLLDURRRRRRRRRUULLLLLLLLLUURRRRRRRRRUULLLLLLLLLUURRRRRRRRRLLLLLLLLLDDRRRRRRRRRDDLLLLLLLL

result:

ok Valid Solution (Length = 295).

Test #28:

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

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: 1ms
memory: 6476kb

input:

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

output:

DDDRRDDLLLLLUUUURUULRRUULLRRRDDRUURDDDDLRDUUUUULDDLUULDDLDDDDRUUDDLUULDDDDRRDURRRDUUULLUUUUUUDLLLDDDDDDDDRRRRRLRRRRRDDDDDDDDLLLDUUUUUULLUUUDRRRUDRRDDDDLUULDDUURDDDDLDDLUULDDLUUUUUDRLDDDDRUURDDRRRLLUURRLUURUUUULLLLLDDRRDDD

result:

ok Valid Solution (Length = 221).

Test #30:

score: 0
Accepted
time: 1ms
memory: 6592kb

input:

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

output:

DLUUUUUUUUULLLDDDDDDDRDDLLUUUUULULUURURDDUULDLDDDDDDDRUDDULUUUUURDRDDDDDRRRUUULUUURDULUDDDDRDDDLUULUUUUUUURRRRDDDDDDUUUUUULDDDDDDDDDRUDLUUUUUUUUDLLLLRDDLDLDLDDRLLLLDUUUUUUUULDURDDDDDDDDDLUUUUUUDDDDDDRRRRUUUUUUULUULDDDRDDDDULUDRUUULUUURRRDDDDDRDRUUUUULUDDURDDDDDDDLDLUUDDRURUULULUUUUULLDDRDDDDDDDLLLUU...

result:

ok Valid Solution (Length = 309).

Test #31:

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

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: 1ms
memory: 6760kb

input:

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

output:

DDDDDRUUUUUUULDURRDDDDDDDRUUUUUUURDDDDDDDRUUUUUUURDDDDDDDRUUUUUUURDDDDDDDRUUUUUUUDDDDDDDLUUUUUUULDDDDDDDLUUUUUUULDDDDDDDLUUUUUUULDDDDDDDLUUUUUUULDDDDDDDLUUUUUUUDDDDDDDRRRRRRRRRLRRRRRRRRRDDDDDDDUUUUUUULDDDDDDDLUUUUUUULDDDDDDDLUUUUUUULDDDDDDDLUUUUUUULDDDDDDDLUUUUUUULDDDDDDDUUUUUUURDDDDDDDRUUUUUUURDDDD...

result:

ok Valid Solution (Length = 353).

Test #33:

score: 0
Accepted
time: 0ms
memory: 8452kb

input:

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

output:

UDDDDDDDDDLLUURLUURLUURLUULLUDDDRLDDRLDDRLDDLLUURLUURLUURLUULLLRUDDDLRRLDDLRRLDDLRRLDDLRRLUUUUUUUURRRLUDDDDDDDDDRRRLUUUUUUUURRRLUDDDDDDDDDRRUUUUUUUUUDDDDDDDDRRRRDLLLLLLLLULLLLLLLLDRRRRDDDDDDDDUUUUUUUUURRDDDDDDDDDULRRRUUUUUUUULRRRDDDDDDDDDULRRRUUUUUUUULRRLDDLRRLDDLRRLDDLRRLDDDURLLLUULRUULRUULRUULLDDL...

result:

ok Valid Solution (Length = 341).

Test #34:

score: 0
Accepted
time: 0ms
memory: 6376kb

input:

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

output:

LLLLLLLLUURRRRRRRRRUDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLRRRRRRRRRUULLLLLLLLLUURRRRRRRRRUULRDDLLLLLLLLLUUDRRRRRRRRRURRRRRRRRRDUULLLLLLLLLDDRLUURRRRRRRRRUULLLLLLLLLUURRRRRRRRRLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDURRRRRRRRRUULLLLLLLL

result:

ok Valid Solution (Length = 265).

Test #35:

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

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: 1ms
memory: 6232kb

input:

5 10
1001011101
1111111111
1000011001
1111111111
1101110010
4 3 4 7

output:

DDDLULLUURRLUDLDDDURRDRRUUUURDRRRURDDDLLLLRDURRRDUUUULDLLUDLULDDDDLUUUDDDRRRRRRRRUDLLULLDURRRRRRRRDDDUUULDDDDLULDULLDLUUUUDRRRUDRLLLLDDDRURRRDRUUUURRDRRUDDDLDULRRUULLULDDD

result:

ok Valid Solution (Length = 171).

Test #37:

score: 0
Accepted
time: 0ms
memory: 3776kb

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: 1ms
memory: 6924kb

input:

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

output:

DDDDDRUURDDDRUUURDDRUUUUUULDDLULDLRDUURUULLDLUDRURRRLDDDRDUUURRUDDDDDDDRRRLUUULUDDURRUUUULDLRDUURDDDDDULDDDDULLDUUUUUUULDDDDDDLDUUULDDDLUUULDDLDUUUUUUUUDDRDDRRDRRRRLRRRRDRRDDRDDUUUUUUUUDLDDLUUULDDDLUUUDLDDDDDDLUUUUUUUDLLUDDDDLUDDDDDRUUDRLDLUUUURRUDDULUUULRRRDDDDDDDURRUUUDRDDDLRRRURDULDLLUURUUDRLDLUL...

result:

ok Valid Solution (Length = 329).

Test #39:

score: 0
Accepted
time: 1ms
memory: 7016kb

input:

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

output:

DDRUUUUUUUUULDDDDDDLDDDLUUUUUUUUULDDDDDDDDDLUUUUUUUUULDDDDDDDDDLUUUUUUUUULDDDDDDDDDLUUUUUUUUUDDDDDDDDDRUUUUUUUUURDDDDDDDDDRUUUUUUUUURDDDDDDDDDRUUUUUUUUURRDDDDDUUUUULDDDDDDDDDRUUURUUUUUURDDDDDDDDDLUUUUUUUUUDDDDDDDDDLLLLLLLLRRRRRRRRRLRRRRRRRRRLLLLLLLLDDDDDDDDDUUUUUUUUULDDDDDDDDDRUUUUUURUUURDDDDDDDDDLU...

result:

ok Valid Solution (Length = 463).

Test #40:

score: 0
Accepted
time: 1ms
memory: 6520kb

input:

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

output:

UUUUUUUULLUDDDRLDDRLDDRLDDLLUURLUURLUURLUULLLRUDDDLRRLDDLRRLDDLRRLDDLRRLUUUUUUUURRRLUDDDDDDDDDRRRLUUUUUUUURRRRUDDDLRDDLRDDLRDDLRUUUUUUUULLUDDDDDDDDDURUUUUUUUURRRRRRRDLLLLLLULLLLLLDRRRRRRRUUUUUUUURUDDDDDDDDDULLUUUUUUUURLDDRLDDRLDDRLDDDURRRRUUUUUUUULRRRDDDDDDDDDULRRRUUUUUUUULRRLDDLRRLDDLRRLDDLRRLDDDUR...

result:

ok Valid Solution (Length = 345).

Test #41:

score: 0
Accepted
time: 1ms
memory: 6556kb

input:

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

output:

LLLLLUURRRRRRRRRUULLLLLLLLLUURRRRRRRRRUDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLRRRRRRRRRUULLLLLLLLLRUURRRRRRRRRUUDDLLLLLLLLLUUDRRRRRRRRRURRRRRRRRRDUULLLLLLLLLDDUURRRRRRRRRUURLLLLLLLLLUURRRRRRRRRLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDURRRRRRRRRUULLLLLLLLLUURRRRRRRRRUULLLLL

result:

ok Valid Solution (Length = 301).

Test #42:

score: 0
Accepted
time: 0ms
memory: 3484kb

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: 6936kb

input:

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

output:

RRDRUUUUURRUUUULLDDLDDDDLLLRRUUUULUULDDUURRRLLDDDDLRUURDDDDRUUUURRLUURRRRRDDDDDDDDDLUUULUUUURDDUULDDDDDDLLUURLDDDURRDUUURDDDRUUUUUUUUULLLDDDDLLDDDDDLULLDLUDRUDRRRURUUUDLLLURRRRUUUDDLDDUUURRRRULLLDUUURURRRDURDULDLLULDDDDDLLDDDDLLLUUUUUUUUURDDDRUUUDRRUDDDLRUULLDDDDDDLUUDDRUUUULUUULDDDDDDDDDRRRRRUULRRU...

result:

ok Valid Solution (Length = 363).

Test #44:

score: 0
Accepted
time: 0ms
memory: 8676kb

input:

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

output:

DRDDDRRRUDLLUURUUURUUUULLDDRLDLUUULDDLDDRLDLDDDLULLUDRDDLRUURUULRUULLUUURLDDDDURRUURURDULDDDDUUULDDDDDDDRRUDDRUDLULUUURUUURUURDDDRDDLRUUUUURRDDDDDDUULDDDLDDLUUULUULLLRUDRRULLRRRUUURDDDLDDDRUUURRRLLURRDURLLLUULUUULDDLDDDLUUDDDDDDRRUUUUURLDDRDDDRUURUUURUUULULDURDDURRDDDDDDDLUUUDDDDLUDRURUURRUDDDDLRUUU...

result:

ok Valid Solution (Length = 369).

Test #45:

score: 0
Accepted
time: 0ms
memory: 3780kb

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: 0ms
memory: 11764kb

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:

DDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUULDDDDDDUUUUUURRDDDDDDDDDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUURDDDDDDDDDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUURDDDDDDDDDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUURDDDDDDDDDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUURDDDDDDDDDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDD...

result:

ok Valid Solution (Length = 1031).

Test #47:

score: 0
Accepted
time: 6ms
memory: 14100kb

input:

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

output:

DDDDDLLUURLUURLUUUUUUUUUUUUUULLUDDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDLLUURLUURLUURLUURLUURLUURLUURLUURLUULLUDDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDLLUURLUURLUURLUURLUURLUURLUURLUURLUULLUDDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDLLUURLUURLUURLUURLUURLUURLUURLUURLUULLUDDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLUUUUUUUUU...

result:

ok Valid Solution (Length = 1139).

Test #48:

score: 0
Accepted
time: 0ms
memory: 11132kb

input:

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

output:

LLLLLLLUURRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLUDRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRR...

result:

ok Valid Solution (Length = 1029).

Test #49:

score: 0
Accepted
time: 0ms
memory: 3556kb

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: 4ms
memory: 13084kb

input:

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

output:

RRUURDDDDDRURDRURUURDDRUUUUUURDDRRDDRUUUULLRDURUUUUUUUUUUUULDDLDDDDDDLUUUUUUUULLLDDRRLDDRLDDLLDDRDDRRRRRLLLUULRDDLDDLDDLDDLLRUUUULDLULUUUURDDRRRLLUURUULUUUUUULLDDLLLUULLLRRRRRLLDDDDDDRDDDDDDLLLLRDDLRDDLDDRDRURDRURRDULLDLULDLULUURRRUULRRRLLDDLLUUUURRUULLLRRRUULUUUUUULLDDRDDDDLUUDDRUUUULUURRDDDDDDRDDD...

result:

ok Valid Solution (Length = 1195).

Test #51:

score: 0
Accepted
time: 4ms
memory: 12820kb

input:

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

output:

DDDDDDDDDRUUUUURDDDDRDRUUUUUULLUUURUUURUUUUUUULDDDDLUUUULDDDDDDRDDLDLUUUUUUUUULDDDDDLDLDDDDDDDDDRRLUUUURUUULDURUDDDDDDUULDDDDLDDLDDLUUURUUUUUUUUUUUUUUUULDDLDDDDDDDDDDDLDDDDDDLULDLUUUUUUUUUUUUURDDDDRUUUUUUUURDDDDDDDDDDLDDDDLUUUUDDDDDURUUUURUUUUUUUUUULUULDDDDLUUUDDDRDUUUUURRRLLDDDDDDDDDDLUUUULDDDDDDDD...

result:

ok Valid Solution (Length = 1229).

Test #52:

score: 0
Accepted
time: 0ms
memory: 3556kb

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: 5ms
memory: 9988kb

input:

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

output:

DDDDDDDDDDDDDLUUUUUUUUUUUUULDDDDDDDDDDDDDLUUUUUUUUUUUUULDDDDDDDDDDDDDLUUUUUUUUUUUUULDDDDDDDDDDDDDLUUUUUUUUUUUUUDDDDDDDDDDDDDRUUUUUUUUUUUUURDDDDDDDDDDDDDRUUUUUUUUUUUUURDDDDDDDDDDDDDRUUUUUUUUUUUUURDDDDDDDDDDDDDRRUUUUUUUUUUUUURDDDDDDDDDDDDDRUUUUUUUUUUUUURDDDDDDDDDDDDDRUUUUUUUUUUUUURDDDDDDDDDDDDDRUUUUUU...

result:

ok Valid Solution (Length = 1195).

Test #54:

score: 0
Accepted
time: 4ms
memory: 12744kb

input:

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

output:

DDDDDDDDDRRUULRUULRUULRUULRUUUUUUUUUULLDDRLDDRLDDRLDDLLDDRLDDRLDDRLDDRLDDLLLRUULRRLUULRRLUULRRLUULRRLUULRRLUULRUULRUULRUULRRRRLDDLRRLDDLRRLDDLRRLDUUUUUUULLDDDDDDDDDDDDDDDDDDRRRLUUUUUUUUUURRRLUUUUUUUURRRRDDLRDDLRDDLRDDLRDDLRDDLRDDLRDDLRDDLRRRUULRUULRUULRUULRUULRUULRUULRUULRUULRRRDDLRDDLRDDLRDDLRDDLRD...

result:

ok Valid Solution (Length = 1215).

Test #55:

score: 0
Accepted
time: 0ms
memory: 7040kb

input:

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

output:

URRRRRRRRRRRRRRRRRRRUDLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUUDDRRRRRRRRRRRRRRRRRRRUDDLLLLLLLLLLLLLLLLLLLDUDLLLLLLLLLLLLLLLLLLLDDURRRRRRRRRRRRRRRRRRRDDUU...

result:

ok Valid Solution (Length = 507).

Test #56:

score: 0
Accepted
time: 0ms
memory: 3616kb

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: 7ms
memory: 14956kb

input:

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

output:

DDDRUURUURDDRDDDDRUUUUUURDDDDDDDDDDDDDDLLUURUULUULUULLDDRLDDRRDDDDLDLUUULLDDLLUURLUURUUUUUURDDRLDDRDDLRUULUUUULUUUUUURRRRRRRRUULLLLLLLLLDDDDDDDDLDDRLDDRLDDLDDLDDLUUUUUURRLUURUUUUUULDDDDLDDLDDLDDRLDDRDDLDLUUUUUUUUURLUURUUUURDDDRUUUUURRRLUULLLDDLUULLLDDDDDDDDLUUUUUUUUDDDDDDDDRRUUUUUURDDDDUUUULDDDDDDLD...

result:

ok Valid Solution (Length = 1351).

Test #58:

score: 0
Accepted
time: 5ms
memory: 12848kb

input:

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

output:

DDDDRDDDDDDDDDDDDDLUUUUUUUUUUULDDDDDDDDDDDLUUUUUUUULDDDDDDLDLLDLUUUUURDDRLUULUURRDRUULRUUUUUUUUULDDDDDDDLDLULDDDDDDDDDDLUUUUUUUUUUUUURDRURUUUULDDLUULDLULDURDDDDDDDDDLUUUUUUDDDDDDRDDLRDDDDDDLUUUUDDDDRUUUUUUUUUUUUUUUURURDDDURUURDDDDDDUULDLDUULDDDDDDDDDDDDDRUUUUUUUUUURDRURUUUUUUURRDDDDDRUURUUULDURDDDDU...

result:

ok Valid Solution (Length = 1371).

Test #59:

score: 0
Accepted
time: 0ms
memory: 3624kb

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: 4ms
memory: 14920kb

input:

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

output:

DDDDRUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDLDDDDDLUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUDDDDDDDDDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUURRDDDDDDDDDDDDDUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDRUUUUURUUUUUUUUUUUUUURRDDDDDDDDDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUURDDDDDDDDDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUURDDDDD...

result:

ok Valid Solution (Length = 1711).

Test #61:

score: 0
Accepted
time: 4ms
memory: 12848kb

input:

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

output:

DDRRUULRUUUUUUUUUUUUUUUULLUDDDRLDDRLDDRLDDRLDDRLDDRLDDLLLRUULRRLUULRRLUULRRLUULRRLUULRRLUULRRLUULRRLUDDDDDDDDDDDDDDDDDLRRLDDLRRLUUUURRRLDUUUUUUUUUUUUUUURRRRUDDDLRDDLRDDLRDDLRDDLRDDLRDDLRDDLRDDLRRRUULRUULRUULRUULRUULRUULRUULRUULRUULRRRUDDDLRDDLRDDLRDDLRDDLRDDLRDDLRDDLRDDLRRRUULRUULRUULRUULRUULRUULRUU...

result:

ok Valid Solution (Length = 1291).

Test #62:

score: 0
Accepted
time: 4ms
memory: 13228kb

input:

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

output:

LLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUDRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRDDLLLLLLL...

result:

ok Valid Solution (Length = 1225).

Test #63:

score: 0
Accepted
time: 0ms
memory: 3616kb

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: 9ms
memory: 13172kb

input:

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

output:

DDDDRDDDDRDDDDRDDRUUUULRUULRRUULLLRRRUUUUUULDDDDLUULLRUULRRLDDDDUURDDRUUUURDDDDDDDDDDDDDDDDDDDLUUULLUULUULDDDDLDDLLUURLUULDDDDLUUUUUUUUUURDDDDRRRLLUUUUUURDDDDRRRLDULUURLUURLDDDDLUUUULUULUURUULLLLLLDDRRRRLLLLDDLLUURLUULLDDRLDDLUUUUDDDDRRLUUUURRRLDDDDRRRRRRLLLDDLDDDDRDDRDDRUUUULRUULLRRDDDDDDDDLDDLUULU...

result:

ok Valid Solution (Length = 1261).

Test #65:

score: 0
Accepted
time: 11ms
memory: 14296kb

input:

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

output:

DDDDDLUUUUUUUUUUUURUUUUUULDDDLDDDDDDDDDDLDDDDDLUULDDLUUUUUUUUUUUUUUURRDDDDLUUDDRRUUUUUUUULLDDLUULDDDDDDDLDDDRUDDDDDLDDRLDDDLUUUUUUURDULUUUUUURLULDDDDDDDDDLDDDDLUUUUUUUUUUUUUUUUUULDDDDDDDDDDLDDDDDDRUUUUDDDDLDDDLUUUULDDDDLUUULDLUUUUUUUUUUUUUUUUURDDDDRDDLRDDDLUDRDDLRRDDRUUUURUULLDDDUUURRUUUUULDDDLUUUUL...

result:

ok Valid Solution (Length = 1547).

Test #66:

score: 0
Accepted
time: 0ms
memory: 3616kb

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: 19ms
memory: 29156kb

input:

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

output:

DDDDDDDDDDDDDDDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDLDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDD...

result:

ok Valid Solution (Length = 3157).

Test #68:

score: 0
Accepted
time: 19ms
memory: 25052kb

input:

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

output:

DDDDDDDDDDDDDLLUURLUURLUURLUURLUURLUURLUUUUUUUUUUUUUUUULLUDDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDLLUURLUURLUURLUURLUURLUURLUURLUURLUURLUURLUURLUURLUURLUULLUDDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDLLUURLUURLUURLUURLUURLUURLUURLUURLUURLUURLUURLUURLUURLUULLUDDDRLDDRLDDRLD...

result:

ok Valid Solution (Length = 2411).

Test #69:

score: 0
Accepted
time: 7ms
memory: 18580kb

input:

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

output:

LLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLL...

result:

ok Valid Solution (Length = 2195).

Test #70:

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

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: 35ms
memory: 27156kb

input:

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

output:

DDDDDDDDDDDDDDDDDDDDDDLLUURLUUUUUUUURDDDDDDUUUUUULUULDDDDDDDDLDDLLLDDDLULLUUUUUURDDDDRUURRRLLUULRRRRLUURUULLUULDDDDLUULDDLLDDLDDLDDRRLLDDLUULLLUUUUUUUURRUURUURRDDLRRRRRLLUURUURRDDLRRRUULRUURUURUUUURUUUULDDLDDDDLLUUUUUULDDLUULDDLDDDDDDRDDLLUUUUUUUULDDDDDDLDDLDDLDDLLDDLDDDDLUUUUUURLUURUURRDRUDLDLRUULU...

result:

ok Valid Solution (Length = 2845).

Test #72:

score: 0
Accepted
time: 42ms
memory: 29804kb

input:

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

output:

DDDLUUUUUUUUUUUUUUUURDDDDDDRDDDDDDLUUUUDDDDRRDDDLUDRDDLRDRUUUUUUUUUUUUUUUUURDDDDDDDDDDDDDDDDDRUURDDRUUUUUUUUUUUUUURDDDDRDDDDDDDDDLUUUUUUUDDDDDDDDURRDRUUULDURUUUUUUUUUUUUUUUUUUURDDDDDDDDDDDDDDDDDDDDDDRRUUUUUULDDDDUUUURUURDDDDRDDDDLUUDDRRRRUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUU...

result:

ok Valid Solution (Length = 3487).

Test #73:

score: 0
Accepted
time: 0ms
memory: 3564kb

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: 9ms
memory: 20584kb

input:

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

output:

DDDDDDDDDDDDDRUUUUUUUUUUUUUUUUUUUULDDDDDDLDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDD...

result:

ok Valid Solution (Length = 2679).

Test #75:

score: 0
Accepted
time: 10ms
memory: 16468kb

input:

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

output:

RDDDDDDRRUULRUULRUULRUUUUUUUUUUUUUULLDDRLDDRLDDRLDDRLDDRLDDLLDDDDRLDDRLDDLLUURLUURLUURLUURLUUUUUUUUUUUULLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDLLUURLUURLUURLUURLUURLUURLUURLUURLUURLUULLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDLLUURLUURLUURLUURLUURLUURLUURLUURLUURLUULLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDR...

result:

ok Valid Solution (Length = 2007).

Test #76:

score: 0
Accepted
time: 4ms
memory: 14008kb

input:

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

output:

LLLLLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRR...

result:

ok Valid Solution (Length = 1743).

Test #77:

score: 0
Accepted
time: 0ms
memory: 3776kb

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: 24ms
memory: 21296kb

input:

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

output:

UUULDDDUUURUULRUULRUUUUUULDDDDUUUURUULRUULRUULRRRDDRDDLLUUDDRRRRRDDRUUUUUUUURUURDDRRDDRUUUUULDLRDUURRDRDDRUUURDRURDDDRRUULRRRRRDDDDRDDRUURUUUULDDLUUUDDDDURUURURDDDDDDDDDDDDDDDDDDDDDDDLLDLUUUUURUULLLDDRLDDDDLUUUULLLDDDDLLUURUUUUUUUURDDRRRRRRRRLLLLUURUURDDRRLUURUULLLLDDLLDDLUUUURRUURRLLUULLLDDLDDRLDDL...

result:

ok Valid Solution (Length = 2347).

Test #79:

score: 0
Accepted
time: 30ms
memory: 24268kb

input:

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

output:

URDDDDDDDDDDDDDDDDDDDDDRUUURDDDRUUUULRUUUUUUUUUURDDDDDDDDDRUUUUUUUUUUUUUUUUUUULDDDLDDRDDDLULDDDDDDDDDDDLUUUUUUUUUUUUUUUUUULDLULDDDDDDDDDDRUUUDDDDDDDDDDDDDDDDLUUULDDDDLUUUUUUUUUUURDDDDRUUUUULUUUUUUUULDDDDDDDLDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUURDDRUUURDDUULDDDLDDDDDDDUUUUUUUUULULDDDDDDDDDLULDDDDDDDD...

result:

ok Valid Solution (Length = 2921).

Test #80:

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

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: 28ms
memory: 31284kb

input:

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

output:

DDDDDRUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDLDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDD...

result:

ok Valid Solution (Length = 3783).

Test #82:

score: 0
Accepted
time: 35ms
memory: 26240kb

input:

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

output:

DDDDDDDDDDRRUULRUULRUULRUULRUULRUUUUUUUUUUUUUUUUUULLUDDDRLDDRLDDRLDDRLDDRLDDRLDDRLDDLLDDRLDDRLDDRLDDRLDDRLDDLLLRUULRRLUULRRLUULRRLUULRRLUULRRLUULRRLUULRUULRUULRUULRUULRUULRUULRUULRRRRLUDDDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDDLRRLDUUUUUUUUUUUUUUULLUDDDDDDDDDDDDDDDDDDDDDDDDDDDDDRRRLUUUUUUUUUUUURRRLDUUU...

result:

ok Valid Solution (Length = 2793).

Test #83:

score: 0
Accepted
time: 9ms
memory: 20212kb

input:

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

output:

RRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLL...

result:

ok Valid Solution (Length = 2799).

Test #84:

score: 0
Accepted
time: 0ms
memory: 3560kb

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: 35ms
memory: 25760kb

input:

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

output:

DDLUUDDRRDDRRRDDLLLLLUURLDDRRRRRRDDRUURRDDDDDDDDRDDDDDDRDDDDRUURDDDDRUURDDDRUUURUULLLRRRUUUUUUUURDDDDRRUULRRUURRUURUURUURUURDDRRUUUUUUUUUULLLLDDRDDDDLDDLDDLDDLLDDLDDLUULLUUUUUUUUUUUURRUULLLDDLDDRLDDRDDLLDDRRLDDLLDDDDLLUULDURRUULLRUULRRRUULLLUURRRRLLLUURRRLUURLUULDDLUULLDDDDLUUUULLDDLUULLDDLUULLRRDDD...

result:

ok Valid Solution (Length = 2783).

Test #86:

score: 0
Accepted
time: 46ms
memory: 30168kb

input:

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

output:

DDDDDDDDDRRDDLLLUUUUULDDDDLDLULDLUUUUUUUURDDRDDDLUDDURRUUUUUUUUUUURDDDDDDDRUUUUUUUUUUUUUURDDDDDDDDDRDDRUUUUULUUUUUUUUUUUURUULLDDDDDDLUUUUUULDDDDDDLUUUUUULDLDDDDDDDRUUUUUDDDDDDDDDDRURUUUULDDUURDDDDDDUULDLDDDDDDLUUULDDDLDDDDDDDDDDLUULDDLUUUURUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDLDLDDDDDDDDDDDDLUUUUUU...

result:

ok Valid Solution (Length = 3509).

Test #87:

score: 0
Accepted
time: 0ms
memory: 3616kb

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: 19ms
memory: 30832kb

input:

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

output:

DLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDDDLUUUUUUUUUUUUUUUUUUUUUUUUUUUUULDDDDDDDDDDDDDDDDDDDDDDDDDDDD...

result:

ok Valid Solution (Length = 3827).

Extra Test:

score: 0
Extra Test Passed