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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#688841#7751. Palindrome Pathicpc_zhzx034AC ✓594ms3956kbC++143.2kb2024-10-30 13:53:232024-10-30 13:53:25

Judging History

你现在查看的是最新测评结果

  • [2024-10-30 13:53:25]
  • 评测
  • 测评结果:AC
  • 用时:594ms
  • 内存:3956kb
  • [2024-10-30 13:53:23]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
#define il inline
#define fi first
#define se second
#define mk make_pair
#define eb emplace_back
#define rep(i,l,r) for(int i=(l); i<=(r); ++i)
#define rep_(i,l,r) for(int i=(l); i>=(r); --i)
typedef long long lr;
typedef double db;
typedef pair<int,int> pii;
typedef vector<int> vi;
constexpr int mod1=998244353,mod2=1e9+7;
constexpr db pi=3.141592653589793,eps=1e-9;
constexpr int inf32=0x3f3f3f3f,Inf32=0xc0c0c0c0;
constexpr lr inf64=0x3f3f3f3f3f3f3f3f,Inf64=0xc0c0c0c0c0c0c0c0;
template<typename T>il T Max(T x,T y) { return (x>y)? x:y; }
template<typename T>il T Min(T x,T y) { return (x<y)? x:y; }
template<typename T>il T gcd(T x,T y) { return (!y)? x:gcd(y,x%y); }
template<typename T>il T Abs(T x) { return (x>0)? x:(-x); }
template<typename T>il T Rnd(T l,T r,mt19937_64 &eng)
{
	uniform_int_distribution<T> uid(l,r);
	return uid(eng);
}
mt19937_64 eng(chrono::high_resolution_clock::now().time_since_epoch().count());
constexpr int N=32;
int n,m,sx,sy,fx,fy,wgt[4];
int cnt,vis[N][N];
string s[N],t;
int dx[4]={0,0,-1,1},dy[4]={-1,1,0,0};
il int val(int X,int Y)
{
	if(X<1||X>n||Y<1||Y>m||!s[X][Y])
		return 0;
	return 1;
}
il int calc(lr w)
{
	rep(i,0,3)
	{
		if(w<wgt[i])
			return i;
		w-=wgt[i];
	}
	return -1;
}
il void chk()
{
	cnt=(sx==fx&&sy==fy)? 1:2;
	rep(i,1,n)
		rep(j,1,m)
		{
			vis[i][j]=0;
			if(!s[i][j])
				++cnt;
		}
	vis[sx][sy]=1,vis[fx][fy]=1,t="";
	int nsx=sx,nsy=sy,nfx=fx,nfy=fy;
	rep(p,1,40000)
	{
		if(cnt==n*m&&Abs(nsx-nfx)+Abs(nsy-nfy)<=1)
		{
			rep(i,0,p-2)
				cout<<t[i];
			if(nsx>nfx)
				cout<<'U';
			if(nsx<nfx)
				cout<<'D';
			if(nsy>nfy)
				cout<<'L';
			if(nsy<nfy)
				cout<<'R';
			rep_(i,p-2,0)
				cout<<t[i];
			cout<<'\n';
			exit(0);
		}
		int flag=0;
		rep(i,0,3)
			flag|=(val(nfx-dx[i],nfy-dy[i])|(!val(nfx+dx[i],nfy+dy[i])));
		if(!flag)
			return;
		int sum=0;
		rep(i,0,3)
		{
			int cnt=0;
			if(val(nsx+dx[i],nsy+dy[i])&&!vis[nsx+dx[i]][nsy+dy[i]])
				++cnt;
			if(val(nfx-dx[i],nfy-dy[i])&&!vis[nfx-dx[i]][nfy-dy[i]])
				++cnt;
			if(cnt==0)
				wgt[i]=1;
			if(cnt==1)
				wgt[i]=8;
			if(cnt==2)
				wgt[i]=64;
			sum+=wgt[i];
		}
		int dir=calc(eng()%sum);
		while(!(val(nfx-dx[dir],nfy-dy[dir])|(!val(nfx+dx[dir],nfy+dy[dir]))))
			dir=calc(eng()%sum);
		if(dir==0)
			t+="L";
		if(dir==1)
			t+="R";
		if(dir==2)
			t+="U";
		if(dir==3)
			t+="D";
		if(val(nsx+dx[dir],nsy+dy[dir]))
			nsx+=dx[dir],nsy+=dy[dir];
		int op=Rnd(val(nfx+dx[dir],nfy+dy[dir]),val(nfx-dx[dir],nfy-dy[dir]),eng);
		if(op)
			nfx-=dx[dir],nfy-=dy[dir];
		if(!vis[nsx][nsy])
			vis[nsx][nsy]=1,++cnt;
		if(!vis[nfx][nfy])
			vis[nfx][nfy]=1,++cnt;
	}
}
il void Solve()
{
	cin>>n>>m;
	rep(i,1,n)
		cin>>s[i],s[i]=" "+s[i];
	cin>>sx>>sy>>fx>>fy;
	rep(i,1,n)
		rep(j,1,m)
			s[i][j]^=48;
	int Q=150;
	rep(i,1,Q)
		chk();
	cout<<-1<<'\n';
	return;
}
int main()
{
#ifdef LOCAL
	string fpre="test",isuf="in",osuf="out";
	assert(freopen((fpre+"."+isuf).c_str(),"r",stdin));
	assert(freopen((fpre+"."+osuf).c_str(),"w",stdout));
#endif
	ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	int T=1;
	while(T--)
		Solve();
	return 0;
}

这程序好像有点Bug,我给组数据试试?

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3624kb

input:

2 2
11
11
1 1 2 2

output:

DURUD

result:

ok Valid Solution (Length = 5).

Test #2:

score: 0
Accepted
time: 333ms
memory: 3720kb

input:

2 2
10
01
1 1 2 2

output:

-1

result:

ok No Solution.

Test #3:

score: 0
Accepted
time: 0ms
memory: 3572kb

input:

1 1
1
1 1 1 1

output:



result:

ok Valid Solution (Length = 0).

Test #4:

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

input:

5 4
1111
1111
1111
1111
1111
4 2 4 2

output:

LDRDRULLLUUDRRRLRLDDULLDDDDDLLLUUDRUURUURDUULLLDDDDDLLUDDLRLRRRDUULLLURDRDL

result:

ok Valid Solution (Length = 75).

Test #5:

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

input:

5 5
11111
10101
11111
10101
11111
1 4 5 5

output:

RDDRRRLDUULULULDRLRRRRRDDDDLURDURDLDLRDULUUUUULUDRLDLDRUDRULDDDDRRRRRLRDLULULUUDLRRRDDR

result:

ok Valid Solution (Length = 87).

Test #6:

score: 0
Accepted
time: 0ms
memory: 3820kb

input:

5 3
111
100
111
001
111
4 3 3 2

output:

RDDDLLUURRUURRURULDRURDURLURDUDRDLRUUDRLRLDDULRDDDDDDDURRULULULURRUDDDDDDDRLUDDLRLRDUURLDRDUDRULRUDRURDLURURRUURRUULLDDDR

result:

ok Valid Solution (Length = 121).

Test #7:

score: 0
Accepted
time: 0ms
memory: 3820kb

input:

5 4
1001
1101
1111
0011
0010
2 2 1 1

output:

LRURUULLLLURURLDDULLLRDLUDURDLURRRDUDLDRRRDDURLDULLDUDDURLRUUURDRDRUUURLRUDDUDLLUDLRUDDRRRDLDUDRRRULDRUDULDRLLLUDDLRURULLLLUURURL

result:

ok Valid Solution (Length = 129).

Test #8:

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

input:

5 3
101
111
100
111
100
4 1 2 2

output:

RURDDLULDDULDDDLUDRULRLRRRDLULUUULULDRRRLRLURDULDDDLUDDLULDDRUR

result:

ok Valid Solution (Length = 63).

Test #9:

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

input:

5 5
01110
10110
11110
11011
11100
2 4 5 1

output:

LDLRDDRRRRRLRUULLURDLDLUDDLDRLLURULURDRDLDLUDLLULUURRLUUUUUDUDDRDLDDUUDLDRDRLRDDUUURLDRURULLDLUDDURDDRDUUULURUDRDDLRLULRLRUDUURUUDURLRLULRLDDRDURULUUUDRDDRUDDULDLLURURDLRUUUDDRLRDRDLDUUDDLDRDDUDUUUUULRRUULULLDULDLDRDRULURULLRDLDDULDLDRULLUURLRRRRRDDRLDL

result:

ok Valid Solution (Length = 253).

Test #10:

score: 0
Accepted
time: 0ms
memory: 3820kb

input:

5 3
011
111
110
111
011
3 1 2 1

output:

ULUUULLDURULDRRLDLLDULLDUDULUDRLLUUULRLLLLDRRLRDUDRLDLDRRRURUDRLRRLRDDDLRUURDDRRRLDDUDLULLUDRLLLLRURUDRLDDUUUUDDDUUDUULULUUDUDULDUDDULDLLLLRLURLULRULRLLLLDLUDDUDLUDUDUULULUUDUUDDDUUUUDDLRDURURLLLLRDULLULDUDDLRRRDDRUURLDDDRLRRLRDURURRRDLDLRDUDRLRRDLLLLRLUUULLRDULUDUDLLUDLLDLRRDLURUDLLUUULU

result:

ok Valid Solution (Length = 289).

Test #11:

score: 0
Accepted
time: 0ms
memory: 3600kb

input:

4 5
11111
11111
11111
11111
3 2 1 3

output:

LURULULDDDRRDUDDDURRDLRUDLRRLLUDRRRLURLRRULRLULDLDRLRRDDUDDLULLDULRDRURRURRURDRLUDLLULDDUDDRRLRDLDLULRLURRLRULRRRDULLRRLDURLDRRUDDDUDRRDDDLULURUL

result:

ok Valid Solution (Length = 145).

Test #12:

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

input:

5 5
11111
10101
11111
10101
11111
2 5 1 1

output:

ULLUUUULLDDRDDUURRRLUURRDLDUULLLRULLUDDDURLRULLDUULLLURRUUDDRLDRLDRUULUUULUURDLRDLRDDUURRULLLUUDLLURLRUDDDULLURLLLUUDLDRRUULRRRUUDDRDDLLUUUULLU

result:

ok Valid Solution (Length = 143).

Test #13:

score: 0
Accepted
time: 0ms
memory: 3664kb

input:

4 5
11111
10000
11111
00001
1 3 4 5

output:

LLDRRDRDUURDULLULDDLURDRRLDUUULLDRLUDRLRRRRLDRUDLDLURLUDLDRLLLDLLLDLLLLDDRRUUDRDDUDLUDURDRDLDRRDLDURLLDRRURRLDDRLULULDUUDLDURLUDDDUDDRUDDURLUDDRUUDDUURLUUURDDRRDDDRUUDLDRDURDUDUDUDDUUUUUDURRDUDLDRRDUUURUULRLRDDUDDRDRUURRUDRRLLRLULLLLURUDRURRURDURULLLLULRLLRRDURRUURDRDDUDDRLRLUURUUUDRRDLDUDRRUDUUUUUD...

result:

ok Valid Solution (Length = 480).

Test #14:

score: 0
Accepted
time: 326ms
memory: 3728kb

input:

3 5
10100
00010
00111
1 3 1 1

output:

-1

result:

ok No Solution.

Test #15:

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

input:

4 5
10001
11111
11100
11111
4 5 3 1

output:

LLLLDRRDLLULUUULLDLULRLDLDLRULRDLLDLLDRLLLRRRLUDRRRDDDDRDRLDRURLRUULLUDRRDDUUURRUUDLURURLULRRLRRLRRURRDURLUURURDDRURLLLRRUDRUUULRRURRLLRLUUDLLLDUULRLLRRURRLUUURDURRLLLRURDDRURUULRUDRRURRLRRLRRLULRURULDUURRUUUDDRRDULLUURLRURDLRDRDDDDRRRDULRRRLLLRDLLDLLDRLURLDLDLRLULDLLUUULULLDRRDLLLL

result:

ok Valid Solution (Length = 283).

Test #16:

score: 0
Accepted
time: 0ms
memory: 3572kb

input:

3 5
11111
10100
11111
1 2 3 5

output:

RRRDRDDLULDLLLLULLLLDLULDDRDRRR

result:

ok Valid Solution (Length = 31).

Test #17:

score: 0
Accepted
time: 410ms
memory: 3728kb

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: 3564kb

input:

5 5
11111
11111
11111
11111
11111
1 3 5 2

output:

DRUDDDDDLDLLUDRLLLRLLLULUUDRUUUDRLRRRLULUUUDDUDDUURLRUDUDUDDRDDUDUDURLRUUDDUDDUUULULRRRLRDUUURDUULULLLRLLLRDULLDLDDDDDURD

result:

ok Valid Solution (Length = 121).

Test #19:

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

input:

5 5
11111
10101
11111
10101
11111
5 1 2 3

output:

UUURURLDUURDDLLRLLLLDDRRRRULLDDDULLRRLLLDLLDLDLRDLUULDLRLLDRLLURLLRDLLURLDDDLUDDLLLLRRLURDUURUURUURUUDRULRRLLLLDDULDDDLRULLDRLLRULLRDLLRLDLUULDRLDLDLLDLLLRRLLUDDDLLURRRRDDLLLLRLLDDRUUDLRURUUU

result:

ok Valid Solution (Length = 191).

Test #20:

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

input:

5 5
11111
10000
11111
00001
11111
4 5 5 3

output:

DLLDDLLLDRRURRRRLLUURRDDLDRLUDURLDLRUUULLLLUUDRULRUDDUDDURURRLDDURRLLRLLDDRLLUURUDRDLLDDUDRDDRURLRDDDRULUDLDDULRULLLURLUDDLDULURDDDRLRURDDRDUDDLLDRDURUULLRDDLLRLLRRUDDLRRURUDDUDDURLURDUULLLLUUURLDLRUDULRDLDDRRUULLRRRRURRDLLLDDLLD

result:

ok Valid Solution (Length = 229).

Test #21:

score: 0
Accepted
time: 411ms
memory: 3704kb

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: 3624kb

input:

5 5
10101
11111
10101
11111
11111
3 1 2 4

output:

RDRLUURLUUULULDDDDDDURDRDRDLRLRULUUDDLRLLRUUURLRRUDLLRRDRLULLDLUDRULRULDLRRLDRRDRRRRLURRDRLRDDLDDRRRURURLUULRURURRRDDLDDRLRDRRULRRRRDRRDLRRLDLURLURDULDLLULRDRRLLDURRLRUUURLLRLDDUULURLRLDRDRDRUDDDDDDLULUUULRUULRDR

result:

ok Valid Solution (Length = 212).

Test #23:

score: 0
Accepted
time: 0ms
memory: 3860kb

input:

5 5
00001
11111
01110
01111
01111
1 5 5 2

output:

LDLLDLDRRURRDDRUURDURLDRRDRRDDLRDURULDDLDLRRRRRDUDLRLUULULULUULRLDUDRRRRRLDLDDLURUDRLDDRRDRRDLRUDRUURDDRRURRDLDLLDL

result:

ok Valid Solution (Length = 115).

Test #24:

score: 0
Accepted
time: 450ms
memory: 3728kb

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: 3624kb

input:

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

output:

RUULUUULLURRRDDDURUUURRDDDDDLDRDLULDDRDLLDLULULDDRUDUDUUDDUDRUURRDLUDLRRLLULUURLURRDRRUUDRDDLLULLRRRRLLRDLRRLLDDUUUDLRRLURUURUULDLLRRRLLRRDLRRRDDDULDUDDDDLDDDULLLULULRRURULLDDDLUURULLRURRUDDRUUULURDULRULUULULUULRUUULUDRLURDDUDLULLLLRLDDDLDDUDULDDUDLRRDRLDDLLLRURULRDRRDRLLULRRLLUURRLLUURRDLDLRULLUULL...

result:

ok Valid Solution (Length = 1125).

Test #26:

score: 0
Accepted
time: 0ms
memory: 3568kb

input:

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

output:

DLDDRRRUUULLURUUURRDDLULDULUULLDDRRUDURDRDRUDUUURLRUDLLUDDLRUURDRLUURRLRLUULUUUULRRRURRRRRLLLRLDRRDDLLLLDLLLUUURRDDDLUDUUURLDLDLLLRDLDRRURULDRDDDRDDLDLUDULUDRDRURDURURUDDDDURLUUUUDURDDRDDRUDUUUULRUDDDDURURUDRURDRDULUDULDLDDRDDDRDLURURRDLDRLLLDLDLRUUUDULDDDRRUUULLLDLLLLDDRRDLRLLLRRRRRURRRLUUUULUULRLR...

result:

ok Valid Solution (Length = 369).

Test #27:

score: 0
Accepted
time: 1ms
memory: 3620kb

input:

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

output:

LLURLUDDDDLLLDDLRRRRUURLUDRRRLRLURULRDRDLRURDLLDLLLLLLLRLDDRRLULDDRRDDRRRUDRLRRDRRRDDLLLLLDLLLLDLDDDDURLDUDURLRURRDULRULUDRRDDDDUDURDURRLDUURURDDRRLDULUDUDURDRLDLUUDURURDRULRURUDDUULLUUUDRUUURUDDRUDLLDLLDRRDLLURLDDRUUDDUUDURRDDDLUDUUDURDRUUDLRRDUUDRRDRLRDRRDRLDLUUDDRDULURRULUULDRULURLDRLURLRDDLUDLDR...

result:

ok Valid Solution (Length = 1850).

Test #28:

score: 0
Accepted
time: 576ms
memory: 3760kb

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: 3568kb

input:

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

output:

DDLDLUUURRURURUULLLDRUDDRRDUDDLDRULDRDRLRLLULRURRLRUURLLUUDRLUULUULDDRLUURDUUUUDUDULURUDLULRLLLLRRULRDRDURDRULLUDDLRRDLRUUDRURLDUDRLDUDUDDDDRUUURUDDUULRLURRDLRRDDLLUUDDRDUDRDRDUDRDDUULLDDRRLDRRULRLUUDDURUUURDDDDUDUDLRDUDLRURDUURLDRRLDDULLURDRUDRDRLURRLLLLRLULDURULUDUDUUUUDRUULRDDLUULUULRDUULLRUURLRR...

result:

ok Valid Solution (Length = 347).

Test #30:

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

input:

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

output:

LULURLLLLLRDLLDDRLLLLLUURRRDLRDRRULDRRULUDLULDLURDUDLLLUDLRUUUURRUDDDDULRDUURURLLRURUUULLDLLULLLLLDDDDRRRLDRDLLDDDRRDLDDDDDURURRLLULLUUUDRLDLURLDRLLDRDURLRRLUDDURLLRUUURDURURUDRUUURLLRUDDULRRLRUDRDLLRDLRULDLRDUUULLULLRRURUDDDDDLDRRDDDLLDRDLRRRDDDDLLLLLULLDLLUUURURLLRURUUDRLUDDDDURRUUUURLDULLLDUDRULD...

result:

ok Valid Solution (Length = 345).

Test #31:

score: 0
Accepted
time: 537ms
memory: 3948kb

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: 3628kb

input:

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

output:

DDRURRRDLLUULLURRDUUDDDRDRDRUDDDLDDRRURURRRDRUURRRDRUUUUUULLLURULLLLDRDRURDULUULLLUDRURRURRDLDRDDUDLLDRDDLLRLLRDDUDDURUULUUDRLRLLLLRLRDUULUURUDDUDDRLLRLLDDRDLLDUDDRDLDRRURRURDULLLUULUDRURDRDLLLLURULLLUUUUUURDRRRUURDRRRURURRDDLDDDURDRDRDDDUUDRRULLUULLDRRRURDD

result:

ok Valid Solution (Length = 258).

Test #33:

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

input:

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

output:

UDLLLLLUDDDRRDDLUUUULLLRRLRRLDRUULRDUDLRLRLDRLLDRLLRLDLLDRLRDLLLDRDLLRLRLDULRDDDURDRLRLDRDLDRULRLDUULRRRRDDUURDRRDLDURDRRULUDLRDUUDRDRDRRRDDRDDULLUDDRUULLLLLURUURURDRLRLLLDDRDURDLLDLRUULULLLDULDDRRRLDDLRRURULDDDDDULLDLULDDDLDLLLLULLUULURLURLURUDLULDLRRUDRUULURUUUDURDRLRDDDRULLLLRDDRRLDLDDDUDRUDDUDUD...

result:

ok Valid Solution (Length = 1099).

Test #34:

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

input:

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

output:

LLLLULDDLULRUUDUUDRDURLLRUULURDRDDDRRRRLUULULUDLDRUDRRLDDUULURDDRUUDDLDLLLURLDURUDRDDLDURLLDUDURULDRRRURDUULDDDDULLLLURURRDRULUDRULUDRULURLLRLDDLULDUDRRRLDRDLRULLLDDDRLLLURURLDLRLDUUURUDURRRRRRRRUURULLLLLDLLLDLUURRULULLRLLRLDDRDLUUDUDLUDURLULRLLLRLUULULLRDLLRRRRLDDLRLLLRDUDRURUUDLDDRDDDDRDRRRRRRULRL...

result:

ok Valid Solution (Length = 1820).

Test #35:

score: 0
Accepted
time: 441ms
memory: 3720kb

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: 3684kb

input:

5 10
1001011101
1111111111
1000011001
1111111111
1101110010
4 3 4 7

output:

RDURULDRDUDDDDLLDDRRLRRRLLULURULLLURRLRDLLDDRDDLRDDDLULLRRRLLLLUUURLDRRRDRDRDUDRRRRDLRLDLURLUULRURRDLUUDULDRUUUULDLLURRLRDULLRLLDRDURRURRUDRDLLRLLUDRLRRULLDLUUUURDLUDUULDRRURLUULRULDLRLDRRRRDUDRDRDRRRDLRUUULLLLRRRLLULDDDRLDDRDDLLDRLRRULLLURULULLRRRLRRDDLLDDDDUDRDLURUDR

result:

ok Valid Solution (Length = 269).

Test #37:

score: 0
Accepted
time: 574ms
memory: 3800kb

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: 3684kb

input:

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

output:

DRRRDURULURUUUUULRRRDRDLDRRRDDLLDDLLLLULRUUURURDURRLDRDDUUUDULURRRLRLLRDLRDDRRDDLRUUUURRRULRLRLLDRRLRLLLDRRDRDDDULLULRDLDLLURLLDDUUULUUDUDRUULLULLDURRDDDDUDRUURRRRRRDDLULDLLUUDLLLDUDLLRLUURLRRLUUDDURDLURRDRUURRDRRLULRRUUDUDLDDRRLDLRDDUUDLDUURDRDLDDDLLDRULUDRRURRLDDDULDLRDDULURLLLDLRDULDUDULDDDRDLLRL...

result:

ok Valid Solution (Length = 1871).

Test #39:

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

input:

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

output:

RUULDLDDLLURULUULDDDDLLUULLDDDRRRLLUUURUULULDRLDRURRDUURRRDRRRRULLDUUURLRLUUDUDLLRRLULDLLURRLRLRLRLRLURURUDDUULLRDRRLLLLUDUUDULURUDRLURUURLRURDDDLLUULLDRDDLULLLRDDURUDRLDULLDDRLURULDLLRDULDUDLRLDRDRLRLDULRLDDUULRDDDLLUDDURDLLULLURDLDLUULDRDDLLUUUURRRRRRRLDLULDRDLRDDLRRRDRRUDDLLDLRUUDDLULDLLLULLLRDDD...

result:

ok Valid Solution (Length = 816).

Test #40:

score: 0
Accepted
time: 1ms
memory: 3560kb

input:

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

output:

UDRDRLLLLLDDDDRLUUUDDUDLDLLLDDDDLRDRLURRDLUURURDURRRRDULUUUURRRUDLDDRRRDLLLLDLULDDULDLDLDLDULURLLDRURUDURDLDUDUUUDRDRURRDDRRRRDLLDRRLLURUURLUUURRURRULLDDLDRDDDRUULLLDRULDLDUUDLUDLULRLRRDDULDUDLRLLDDRDUURDDLURRRUDRDRDRDUDULRRDRURRLUURRDDDDDLUUDLDUDLUUDULLURLUURRDLURDLDUDLDLURDLLRUDDRUUURDDRRLLLUURRRL...

result:

ok Valid Solution (Length = 943).

Test #41:

score: 0
Accepted
time: 1ms
memory: 3660kb

input:

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

output:

RRRRDDLDDLLDLLLLUDRLRDLLLLLRDUUDRLUDURLDRUUDDDDRDUDUDRLRRRRRRRUUUUUULUULDDDRDLDUDURRRDUUDDLRRLLLLLLLUURLDDUUURLUDRDRRDDDRRUUUURURDUDLDDUUUUDDRUDURRRLLRDLLDDRUDDUURULLRDRULRDDLDRDUDRURURUURRDDRDDRLDRURDLDRLRRUDLUURRDRRDULUDLRRULLURURDDDRDULDRLDRDDRURLLURLLDRUULDURLUUDRDURLDRUDRULRULURLLRRLDLRDUDLLLLU...

result:

ok Valid Solution (Length = 20483).

Test #42:

score: 0
Accepted
time: 543ms
memory: 3720kb

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: 3852kb

input:

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

output:

LDDRLURRDRLRURLRLLUUUURRLRRUURRURULURURDUUURUURRDRUUULLLLLLLLLDLLDRRDRDRUURRRDLDLDRDLDDLUDRLLDRDDRRURRUDLLLLRRLRLLRULUURURDDRDDUDRDRDRRDURLLRDDURUUDLDRUUDRRLULULRLDDDRRLLDDURURUUDDRRUDRLUDUULLDLUURDDRLUDDDUDUDURURLDDURLUUURUUUDUURUURRRRDDRDDRRRULDURURUURDLUURLURUDRDLLDRRDRDLLRDLDLLUDLLDDDDRRLDULRRRD...

result:

ok Valid Solution (Length = 1214).

Test #44:

score: 0
Accepted
time: 1ms
memory: 3568kb

input:

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

output:

RDDDRRUUUUURDLRDLLURLDLDLDLLUUULLDDRUURRDRRULUDRRRLDRDDDRDUUUULLRLUDRDLULUURULRDDRLRUUDRURDDRRDUUUDULULDLLLULURRRRDDDLULUULDDDRLULURUDDLULLURUDLRUDLURLLRRLRRUDLRRULRUULRRDUDLULDRDUULURRDLDLLDURDRDRRLUURURDRDRRRDRLRDUDLRDLLRRRRLDLULUDLUULULRLLULULLDUUUDDLRRDRDURLUUUDRLUDDUDRUUURURDUULURDDUDDDRDURLLLL...

result:

ok Valid Solution (Length = 4238).

Test #45:

score: 0
Accepted
time: 450ms
memory: 3956kb

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: 3576kb

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:

UUURURULURRRDLDDLDLDDUDLDRLDDDDRURDRRURUUDLUURRRDLDRDLRRRDLLDLULLDLLLRULLDDDRURRURUULLLDDDDRRRURDDRLLLDDDRURUUULDDULLULLDDDRLRURULUURULURUDDDRURULDULDDDULLUUURUULUUDUDRURRRUDLLRRLDRUUURURUULLLLLDRDRULDDRDRDRDULURDLDDLUDRDRUDUUDLUURDDLDULURRRLRDDULLLRDDDRUDRUDULLUUDUDDDUDRDRLDRDLRDDURULRRLULRURLRRRRR...

result:

ok Valid Solution (Length = 6273).

Test #47:

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

input:

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

output:

LUUUUUURULLLLLDDDDRRUURULUDLLLLUULLUULDLDDRDUULLLDDRRRRURLDRRDDDLDLLUULLUDLULDDRRURDDDDRDDDRRRRUULLDDRLLDDULLLULLULRUURRDDLRLLLLUUUURRRDDLRLLRRRDURRLDLDURDLDRRUDURULLRRDRRDULRLLDDDDLRRRUDURDUURRURDRRRRRURUURLDLLLRURULLDRUURRLLLDUDLDLURDRDLLDLLURLRLDLUUUUULURDDRRLRUUDRDUUUULLDDDLDRLUURRRRDUDLRDLRDDRD...

result:

ok Valid Solution (Length = 7331).

Test #48:

score: 0
Accepted
time: 5ms
memory: 3736kb

input:

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

output:

LLLLLLRDDDDDRLRRURDURURLRURULLLLLLDLLULURRRRRRRRRRRRRURDRRUDRRRURUULLDDLUDUULLLLLLLLLLLLLLLULLLLUDURRRRRRRLURRLLLRDDDLUDLLDURUDDRRDLRLDLDLUDUUUUULRDRRDULLRDUULDULDUDLDDRURUUURDRDRDLDRDUUDLULURURRDRRRRRURRRRRRLRDLLRRDRRUDULLULLLDLDLLDLLLLLLLULDLRDDULLRLRRRLDLRUUDUDRRLRDUDRUDDRUDUDDURUURURLRLRURDLLLRU...

result:

ok Valid Solution (Length = 45629).

Test #49:

score: 0
Accepted
time: 456ms
memory: 3788kb

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: 3872kb

input:

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

output:

LULLLDDLDRDRRRDRRDRRULUULLRURURUUUULURRRRDDRULURUUURLUUDUURRRRDDDDLLDLDLUUUUUUULLDDRURUULLLLULDRRDDLRDDDDLLULLDRDRRRLDDDURRRRRURRRURULUDDDDDRRUDRLUDLULULUDRDLLLLDRLLRUULDLDRRURUDULLDLDRLLRUUUDLDDURUULUURRLDUUUDLLLRRUUUDLDRDURURRULRDUUUUUDLRDULLDRLLLDURLDRDRDLULLLRRLLURURRDUDUULRRLRRURLUDLDULRRULUUUD...

result:

ok Valid Solution (Length = 5227).

Test #51:

score: 0
Accepted
time: 1ms
memory: 3612kb

input:

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

output:

LULLLDRDDDDLUUULLLDDDDLDRDDLDLDRRRUUUUDLRRRDLDDRLULURRRUURRLUUUULRRDRRURRLULUUULRRRDLRUULLUULRULLUDDDLUULLURRDRRLURURRULLULDLDLDRDRUURRRLLDULDRDDRUDRDRDUUUUUDLDLLURLRLLDDRDDRDUUDUULLDRLLLURRUUDRUULURUDDDLUDLUDDDDDLLRDDUUULLUDLDLRLUDUUURLDLURUULLDLDDDRUDUDUDULULULDDUDDLLLDLRRRDDDLDLDULDDLLURLRDUDLRRD...

result:

ok Valid Solution (Length = 4965).

Test #52:

score: 0
Accepted
time: 576ms
memory: 3700kb

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: 3624kb

input:

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

output:

RRRRRDLDULLDDRUURRDRDRLRLLDDDDLLLULULDLDRDRUDDLDDDLUUUURULLUURULLLDDRRUDRRDDDLLLURURLLLLUURDRLDDRRDURRDRURULULDULURRRLDDLRURRURDRDLDRLLURULLDDDDDDLDDDUULDDLLDLDDDDDLUUUULULURRUUULULDDLDRRRRULLDDDRUDRRRRRDRRDRURUURRDDDRUURDDRRDRDLLLLLLUUULDLLLUULDDRLLULUULRURRUURRURRUULLDULDDRUULRLRURRRDRDLLURLUUDUUR...

result:

ok Valid Solution (Length = 1741).

Test #54:

score: 0
Accepted
time: 1ms
memory: 3644kb

input:

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

output:

DDDDDDDDDRRURULDDRRDDRRULURRUUUUUUUUUURURRRDRRUURRRRRUDLDDLRDULLDDDDDDDDLDLLRDLLLLRRLLUULRULLUUUURDRRUDDDDDLDLUDDLRRDUDDDLUUDRRRLUDDLLDRULDRURLRRLULLLRDLRUULULLUUUDULLULRLLDDRRDDLULLLUUUDULRRDRRDLLURUDURLRLLUUDDUURDLDLRDLRRDLDLDDRLDRULLRRUDDRLURLRRLURLURURUUDURURURULURDDLRUDLLDLDLLUUULULRUURULULDLLR...

result:

ok Valid Solution (Length = 8564).

Test #55:

score: 0
Accepted
time: 1ms
memory: 3876kb

input:

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

output:

RURRRRRRRRRRRRRUURLDLLLLLLLLRLDDLLLLLDLDRRRDDLLUURDRUDDURLRULRDUUDLULDDUUDURURLRURURLLUDDRLULUURDRDLRRULRDDDRLDRUDLUDRDDDULRLULUURURLDDULRLRULRLLRURRRLDRUURDDLLDULRRRLRRLDRDRRURDUDURUURURRURRLLDURDLULLLRUDRLULDDULLDLLURLUUULDRLDLRRDURUDLDDDLRDLDRLRULDUUURLLDDULUDUUUDDDRDLDRLRURLLDDDLRRLDUULURRLUUUUR...

result:

ok Valid Solution (Length = 14884).

Test #56:

score: 0
Accepted
time: 559ms
memory: 3892kb

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: 3712kb

input:

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

output:

DRDDLLLDRRDRRRUURDDURURURULLURULLURURRRDDRDDLULULUUDRDRDRDDDUDLDLLDDRLLDDLLLLLUURULLULRUULULLLLUURUURDRRURDDUUURUURRDLLUUUDRRURLURRLULLLDULDURUUURRRDLRRRDRRRDLDURLLLRRRLLDRDDLUDDLLULDDDURRRRDRRDLDDLUDDLUDDLLLLULLLLLLLLULDDDLLDDLRURDDDDDLDRDLLUDUURRRURDRDDLUULLLRDUDRUUURLRRDLLUDRDURDRLURRRRDDLLUUURLL...

result:

ok Valid Solution (Length = 8795).

Test #58:

score: 0
Accepted
time: 1ms
memory: 3876kb

input:

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

output:

RDLDDRRURURULLDRULLDULLDLLLLLDLLDDLULRLDDDRRRRRDRURDRDDLLLULULLLDLDRRDLDLULDUUUUURDRRLDRRDRDLLLRLDDRRRURRURDRRRRUURDRDLDLUULLRLURURURDRRURDRRDLDDDRRUULRRULUULUUURDDDDLURDRDDDDDLLLDLLDDRLLULUURRRLUDLDUULUULRDLDLUURDRULLLLDDDRULURRRDLDDUDRDDDLDLLULULDDLLUULLLURRUULUUUUUURRRRDRDRRDDLLLULLUURLURRRRUURLU...

result:

ok Valid Solution (Length = 8719).

Test #59:

score: 0
Accepted
time: 594ms
memory: 3760kb

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: 1ms
memory: 3572kb

input:

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

output:

UULURRRRRUURRDLDDDRDDDDRDLLUULURULUULLDRDDLDRDRDLLULLUULULDLLDRRRDDRRLRUUUUULLLLLDRRRRRRUULRUUURLDRRUUDUURUUUURDRULURUUULLLDDRDRDDUDRUDDUURDUURRDRURRULURRULLLDDDLRRURLRULLLLDRDDDDLDDDRLDLLLDURLDUURRDULLUURRRUDLURDRRLLLDDRDURULDDULDRURRDULUDLRRRDDUULLLDLLUUDUUURDDRDDURRUURDDUDURRRULURRDLDRDDRRUDDLDRD...

result:

ok Valid Solution (Length = 6629).

Test #61:

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

input:

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

output:

LLDDLUUDURDRRRRRUURRDLDRURURULLURDLLLDDLDDLDDDRLLRDDDDLLUURURLLDRDDDRDRRUDURDURURRLUDDDRDDURUURLLDRDUDDUUDRRURDRRDDRRUDRLRRDLRDDRRUDLLLUULLLDRUDUULURUULDRUURLLUDRRRUULLLDRDRLRUULUUDDRRRULRRULDRUUUUDLLLLLLRDDURDDDLDLLLRUUURRULLURRUUULULLLDLULLDDDDRDRDDRRULDRRUDRDLDLDLLURRLULLLLDUUURRRRDURLUURRRRDRUUU...

result:

ok Valid Solution (Length = 6679).

Test #62:

score: 0
Accepted
time: 2ms
memory: 3872kb

input:

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

output:

RDDULLLLLLLLLLLDLLLRURLDDULLLULLLLURRRDDRRRRURUDUDRRUDLRLRLRRULDLURLRDLDURULDDRLRRLDURDRDLULDRDLURRULULRRURRDUDURLLLRRRRRRULLUURURUUURURDDRLLDRLDDRLDURLLLLULRUULDULDLULULURUDDLDRLRRLLLRRUDDLDLUUUDULURRUDDDULURRDLUDULUUUURRDUULUURUDLDLDLDUDLUUULLUDRDDDUDDRRRRRLLUURDULDULUUUUURRDRDULDRULRURLURRULLLLLD...

result:

ok Valid Solution (Length = 30802).

Test #63:

score: 0
Accepted
time: 569ms
memory: 3728kb

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: 3640kb

input:

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

output:

LLLLLDRDRDRDLLLLLLLUULLLLUURRLDDRRDUURRDRRDRRULULDDDDDRDDLLLULLULLLLDRUURDURDRURLLRRRRLDDDRRLDDLLLLURURLURLDUDDUUURDDLDDRDDRDURRRURURURRLUULLDLRRULRURURDDRURLDRLRDRRDLURRDRRLDDLRRRDRDRRRUUULULLLDDDDDLUDDDLLRLDLURDDDDLLDLLUUURULLDLLLRRDRDDULRDDUURDDRDDDLLULLURDLRRRUUDRDDUDLLLULULLLLUURDLLLLLUULLRURLD...

result:

ok Valid Solution (Length = 5025).

Test #65:

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

input:

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

output:

LDRDDDLULURLLDDDRRRLUUUULUDULLULLUDRRULURURUDDRRULURRDULURULLRRDDDDUUULDULLDLULDULDLUUURDRRUUDRDDLDLURDDRRDLUURRRLLULRDDLRULLLRULRDDLRLRUULLRUDULUURDUUUUDDRDDLLDRDRLDLDDULDUDDLRLRLULDUURRUUDULDLLLDLULDLLLLLDLLLUURRRRRRUDLDUULULULLDLUUUURRUUURRUUULDULLDDDLDRULULDDDDDDRDDRDDLDDULLDRDLLRDLDDLRUDRDDRRRR...

result:

ok Valid Solution (Length = 4235).

Test #66:

score: 0
Accepted
time: 580ms
memory: 3792kb

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: 3592kb

input:

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

output:

LLUULDDLLLDRRRDDRDDDDDRDRDRUULULUURUUULLURRUUULUULLLLLLLLDRRRDRRDLLLLULLLDLULULLDDLDDRRDLDRRRURULLDDDDLULDDLUULLLUURDRUUUULUULURRRDLDRUDRUURDURRRDDRRURRRLRDRLDRURURDDDDDDDDLDRUDLLDDULLDLDLDLLUUURURRULULDLDLDDLLDLDRDLDLLULUUURURDURURRURLULUURRRDRLDLULLUUUDRLRUULURRLRDDDRURRRRULLRLLDULLRDDRDRRDDDRDDDD...

result:

ok Valid Solution (Length = 8393).

Test #68:

score: 0
Accepted
time: 1ms
memory: 3680kb

input:

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

output:

DLLLLLLLLLLLUURRURRUUULLUURRRRDDRRUULUUUDDDRURLRLDRDRUUUURRDRDULLRRUUULLLLLLUUULUUURRRRDLDRRUDRRRRURDDDDULRUDULLUDRLULRLDRRRDDDDRRRLUUUUUULLLRDDUDRDURRUURRLDDRRDDLLRLUDDDLLDDRRDURRDDRRDDDDLLUUUULLDLDDLDDRDLLUUUURULLLDDRLLUULRURDDRRDDRRDDLLURULRLDLLLLDLUURRRLDRURRDDDDRDDLLLDDRDRRDRUDDDRRDDDUUDRRDDRDL...

result:

ok Valid Solution (Length = 13437).

Test #69:

score: 0
Accepted
time: 21ms
memory: 3736kb

input:

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

output:

RRRRRRRRRRRRRRRRRRLULRUDULRLDDUUDLUDLLRUDLLRDLDLULDRRULRLUDRLUURRLRUDULUDUDRULLRDUULDRDULRDRDDDRUDULDLRLLUURRLURUDUULLDULDLLUUURLLULRLLRLDRLRDUDDLRURDRLRLUUDUDDRRUUDLLLLLLLDULUDULUDLDLLLLDDRRDRRURRRRRRDRDRRRRRRRRRRRRRDRDDLULLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLULLLLLLLLLLLD...

result:

ok Valid Solution (Length = 62639).

Test #70:

score: 0
Accepted
time: 588ms
memory: 3736kb

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: 2ms
memory: 3676kb

input:

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

output:

URRUDDDDLLLDDRRRULDDDLULLLLURRURURULLLULULLLULLUDLDLULURUDDDDDLDDLDDLLLLLDLLLRRUURRDDLLLUDRUULLLRULDLLUULLLLLULULRLURRURURUUULDLUULDLUURLUUUUURRRRRRRRRRRRDDDRRRRRRRRRRDRRRDLDDDRUURRDDRDRDRRLRDLLULDLLDUDRLLDLDRUULLLRDURUURUUUUDRDRDUDLDLLRRULRRDULLLRDDLLLLUULLURLULLDLLRDUUDDUUDLRLRUUUUDRURRURDRLDLDURR...

result:

ok Valid Solution (Length = 35883).

Test #72:

score: 0
Accepted
time: 1ms
memory: 3660kb

input:

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

output:

DLUURRULURRRRDRRRRDRURRRRDLLLDDLDRRUURRRRDLDDRRDDLLLLULULDDLULLDLLLULLLULULURURDRUULLUURURUURRRULLULLDLLLLLLURRULLUULDLDDRDLLDRDLLDDLDUUUUURUURRRRDLUURRRULUULDLUUURLDRUDLDURRDRDRDRLDDRRRRRRUUUUULULURDRURRDLDDDUDRRRURDRDDRURDULURLRRRRRDURRUULLURURUULDLLLDLLDRRDDRRRLDUUUURUUULDDDLDRRRRURDDDRDRURDDLLDR...

result:

ok Valid Solution (Length = 22320).

Test #73:

score: 0
Accepted
time: 584ms
memory: 3660kb

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: 3704kb

input:

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

output:

LDDDDDRURDDLLLULURULULDLLUURUULDLUUULDDDLUUUURRUULLLULDDDDDLUULLDDRUURLDDDDDDDDDRURRDDDRURDDDLDRRRULUUUULULDRRURURULLURDDUDLDULLLUULULDDRDLRUUDLLULULRULLLUDLLULDLUDDDDRDDLULLRUULRULLLURRRULLLDRDRUDRRLLRDRRRRURRLDDDDRURDLDULUDLUDLRLRUDDDUULDULLLDRRURRDUURUDULLDUURLRRDRDLRRDURUULDRLLDDLULRRDRDDULDLULR...

result:

ok Valid Solution (Length = 10957).

Test #75:

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

input:

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

output:

LUUUURRUULLLLDDRRURDDUDLRDLLUDDDDDDDDDRRUULRUULRUULULLLUULLURLURRDRLRDRDLDRDURURDLLDRUUUUUUUULLDDDDLLDDDDLLUURUUULUUULURRUDRRDDRDLDLLRUULLLDDLLLLLLDLLRDUDULDLUDUUULRUDRLURRDLDUULLLUURDLLLLLUDLLURDLULLRUUURRUUULLDULRRRRDDDDLDDLUURDDDDLUUURDRURDDRRRRRDRRURDRDDDDDDDRRRDRUUUULLDDLRDRRDURURURDUDLDDURRDRD...

result:

ok Valid Solution (Length = 6085).

Test #76:

score: 0
Accepted
time: 6ms
memory: 3732kb

input:

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

output:

LLLLLLLLLLLLLLLLDLLLDLUDLLLLLLLLDDDDRRRRRRUDRRDLLUDLLUUDRUDDLUDLRLDLRLRLLRRRRLLDURRRRRLRRRULUUURUURRRRDDRURRRRRRRRRRRRRRUUURRDULLDDLLRRRDLLDRDLRRDLULURRLURRLURDLLRLULRURDLDLLUULDLLLLLRLLLRURURLLLLUDLLULRRLLLLLRDLLULDDLULLLLLLLULLLLLDDDULRDRRRRRRRLDDULDRRRRLLLUDLURLRLDUURRDLDLDDLLRDRLUDRRURRLLUDLDDLU...

result:

ok Valid Solution (Length = 53713).

Test #77:

score: 0
Accepted
time: 571ms
memory: 3728kb

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: 0ms
memory: 3880kb

input:

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

output:

LULULDUURURLULLURRUULUULUUDDLURUDUUDUDDRRRRURRRULDDRRDLDRRRULULDDDLLLLUDRLDLDURDURLDRRDRRRRURURURRRULLRURURULUUURDDDRURDDLLUUDLRURLLLLLLDRLULULUURUULLDLDDUDRRULLDLLULUULLLDRDDDRDLRRURDDRDURRRDLDLUDLDRRDRUUURLURLDDRLRRRRRLLUDRDRRRRDRLRDLLLLLLRRULLUDRDUDRUUDLULDLLURRRLRRLLUULURLRDRLUURRRDUDLRDDUDURLUD...

result:

ok Valid Solution (Length = 21395).

Test #79:

score: 0
Accepted
time: 1ms
memory: 3612kb

input:

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

output:

LDLDDDRURDRRRRRURULLLLULDDRRLURRURULULDLLRUULLLDRDDRLLLULLURRULLUDLDLDDDDRRDRDDLLDDLUUUURRDLDRRDDLULDDDURDDDRDLDLDLUUUUUDULDLLLLDDDLLUURUDDURRDLUULLUUUURUUURRRULULDLUUULURURRDRRDDRLDDLRRDRULURDRDRLURRDLRLDDDRRDDRLRRURUUULULUURRULULLLLLULLURLLLDLDUDRLDDURULDDLLLUDDULLLURRULLLURLRLRLDDLRURLLLDLLLULDDD...

result:

ok Valid Solution (Length = 7757).

Test #80:

score: 0
Accepted
time: 569ms
memory: 3948kb

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: 0ms
memory: 3660kb

input:

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

output:

ULURRDDDLLDLDDLLULULRRRURULUURULUUURDDRDRUURRDDDDRDLDDLDDRURDRDLLLLUULDLLLULLUULDLULLLDRRRUULULDLUURUUUDRRDDLULDRRDRRURURLLUUUUURUDLDRRRDDDDDRDUDDLLLUDRDLDLLRRLRLUULLDUULURUDRUDRLDUDUDRRURLLURDRRUUDUURURDRRULURUURURDUDRRULDRRLLUDURLUDULDLLDRDRLUDUDURDDLRLDUURULLUDLULLDULLDDRLDRLDLRUDDLUUUUURLURDLRLR...

result:

ok Valid Solution (Length = 22791).

Test #82:

score: 0
Accepted
time: 1ms
memory: 3600kb

input:

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

output:

DDDDLLUUUULLUULRUULRRRDDRRRRRRUULLLLDDDUDRLULRRLULULDDDLURLURDURLRDUUULLUURRDDRRUURLLRUULLRRUURRRRRRDDRRRRRRRDRDDRLDDRRDDURRLDDDDRDRRULDULUURUURLUULLULLDDULRRDRDDDULRRRRDDRRDUULDDRDLDDLRDDLUULUDDULDDLURULDLLLLLLLUUUURRDDRRRRRDRRLDUUUUULLUULLLDDDDDLDDLLDDLLDDDULLDDLLUULLUURRUURRRRRDDRUUUURRUURDRDRLDD...

result:

ok Valid Solution (Length = 19609).

Test #83:

score: 0
Accepted
time: 24ms
memory: 3736kb

input:

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

output:

DRRRLDRUDDRUUDURRRRLLLLUDRDURLRDDUUURRDLDLDDRDDDURRLUULRRULLUUUDDURRRUURLLLLDURLUDDDDDRDRUDLDUURDLRLLRURRDULDLRUUDUUDRLDRRLDRRUUDULLRUUDRRRDDURRDRDLUDUDDDRRDRRRRRRRRRRRRRUDRRRDURRRRRRRURRURRUULDLLRLLLLLLLLLLLLDRUULDDURLUDUDURDDRURRRRUULUDUULLRDLULURURLURRUDRURURLUDLLDLUDLRLDLURURRUURUUUUULRDLDRLDUDL...

result:

ok Valid Solution (Length = 68083).

Test #84:

score: 0
Accepted
time: 401ms
memory: 3804kb

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: 3644kb

input:

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

output:

LDRRDRDLLLRLUDRUDUUDURRDRRURRRRRRRDURLLULLLLRULLRLLDRDLDLLRDRDURLLURLULRRLDDRUULLLUDURDDDRDRRRURURDDRRDDLDLDLLUULDLDLDDLLULURDDRRRRRDDRULDRURRRRRDRDDDLLRDRDRURUURRLRRRUURUUURDDRUDDDLLUUURUUULLUULULLDLLURURULUDRRDRURDDLLRDDDDDDRRUUUDLRDRDRRUULDDURRRUULUDLDLLLLDLUDLRDRDRDLDRUDLRRRRUUDRDDDDLLLLLLLLUDLD...

result:

ok Valid Solution (Length = 14375).

Test #86:

score: 0
Accepted
time: 1ms
memory: 3656kb

input:

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

output:

LLUUURRURDDDDRUUUULDLULURURDLUULLDLUULLURRRDRURRRULULLUUUUULLURRRDRDLDRDLDRRDRRDLDLDDDDDLLLRUUULUDULUULLRDULLLDDDLULULLRURURUUUUULDLDLDDDLDRDLDDDDDRULDRDRDLRUULURDLLDURRRLLULUDURUDLDDDDDLDDDDLDRDDRRRURDRRDLLLLDDRRRDRRUULDRRRUULDDDDLUDLLLUDDLLLLULDLLDRDRRURRDLUUUULULURRRDRUDRRUUURRUULUUUDURDRUUUDDLDL...

result:

ok Valid Solution (Length = 18444).

Test #87:

score: 0
Accepted
time: 345ms
memory: 3728kb

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: 3672kb

input:

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

output:

ULLULLDLRULULUUULLRRRDRUULLDDDRDDDULLLLLDDLDLULLDRRRRRRULULUULULDLDLDRRUDLLUULLLDDRRULDRDLLDRRLRLUURLDLDLLUULLDDLULLLDRRLRLRUULURURURRDLRRUULDLULRRLDDUDUDLULUUULDLLURULLURULUUUUUUUURDUULURURDDLDRDRURRULLURRULLUURDRUDRULUURULLLLDRDLDLDLURDRLLLDRRURURLULLURRRRRLDULUDRDUUULURURRDRDDRDLDDLDRRUURRDLDRDRR...

result:

ok Valid Solution (Length = 5547).

Extra Test:

score: 0
Extra Test Passed