QOJ.ac

QOJ

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
#394465#7751. Palindrome PathoscaryangAC ✓4ms35800kbC++173.4kb2024-04-20 14:57:222024-04-20 14:57:22

Judging History

你现在查看的是最新测评结果

  • [2024-04-20 14:57:22]
  • 评测
  • 测评结果:AC
  • 用时:4ms
  • 内存:35800kb
  • [2024-04-20 14:57:22]
  • 提交

answer

#include<bits/stdc++.h>

#define vc vector
#define pb emplace_back
#define pii pair<int, int>
#define mkp make_pair
#define rep(i, a, b) for(int i = (a); i <= (b); ++i)
#define lep(i, a, b) for(int i = (a); i >= (b); --i)

using namespace std;
bool st;

mt19937 gen(time(0));

inline int read() {
	int x = 0, w = 0; char ch = getchar(); while(!isdigit(ch)) w |= (ch == '-'), ch = getchar();
	while(isdigit(ch)) x = x * 10 + (ch ^ 48), ch = getchar(); return w ? -x : x; 
}

const int N = 35;
const int dx[4] = {0, 0, 1, -1}, dy[4] = {1, -1, 0, 0};
// R L D U

int n, m, sx, sy, tx, ty, tot, cnt, vis[N][N];
int f[N][N][N][N], g[N][N][N][N];
pii s[N][N][N][N], t[N][N][N][N];
struct node { int x, y, u, v; };
char a[N][N], CH[4];
vc <int> S;
vc <char> ans;

inline int ok (int x, int y) { return x > 0 && x <= n && y > 0 && y <= m && a[x][y] == '1'; }

inline int same (int x, int y, int u, int v) { return x == u && y == v; }

inline int adj (int x, int y, int u, int v) { return (x == u && abs (y - v) == 1) || (y == v && abs (x - u) == 1); }

inline void to (int &x, int &y, int i) { 
	int u = x + dx[i], v = y + dy[i];
	if (ok (u, v)) x = u, y = v;
}

inline void dfs (int x, int y) {
	// cerr << x << " " << y << endl;
	vis[x][y] = 1; ++ cnt;
	rep (i, 0, 3) {
		int u = x + dx[i], v = y + dy[i];
		if (!ok (u, v) || vis[u][v]) continue;
		S.pb (i);
		dfs (u, v);
		S.pb (i ^ 1); 
	}
}

inline void construct (int x, int y, int u, int v) {
	vc <int> res; int mid = -1;
	if (!same (x, y, u, v)) {
		if (x == u) mid = y < v ? 0 : 1;
		else mid = x < u ? 2 : 3;
	}
	while (!same (x, y, sx, sy) || !same (u, v, tx, ty)) {
		res.pb (g[x][y][u][v]);
		auto [a, b] = s[x][y][u][v];
		auto [c, d] = t[x][y][u][v];
		x = a; y = b; u = c; v = d;
	}
	reverse (res.begin (), res.end ());
	for (auto u : res) S.pb (u);
	for (auto u : S) ans.pb (CH[u]);
	if (mid != -1) ans.pb (CH[mid]);
	reverse (S.begin (), S.end ());
	for (auto u : S) ans.pb (CH[u]);
}

inline void bfs () {
	queue <node> Q;
	Q.push (node {sx, sy, tx, ty});
	f[sx][sy][tx][ty] = 1;
	while (!Q.empty ()) {
		auto [x, y, u, v] = Q.front (); Q.pop ();
		if (same (x, y, u, v) || adj (x, y, u, v)) return construct (x, y, u, v);
		rep (i, 0, 3) {
			int a, b, c, d;
			if (ok (a = u + dx[i ^ 1], b = v + dy[i ^ 1])) {
				to (c = x, d = y, i);
				if (!f[c][d][a][b]) {
					f[c][d][a][b] = 1;
					g[c][d][a][b] = i;
					s[c][d][a][b] = mkp (x, y);
					t[c][d][a][b] = mkp (u, v);
					Q.push (node {c, d, a, b});
				}
			}
			if (!ok (a = u + dx[i], b = v + dy[i])) {
				a = u; b = v;
				to (c = x, d = y, i);
				if (!f[c][d][a][b]) {
					f[c][d][a][b] = 1;
					g[c][d][a][b] = i;
					s[c][d][a][b] = mkp (x, y);
					t[c][d][a][b] = mkp (u, v);
					Q.push (node {c, d, a, b});
				}
			}
		}
	}
}

bool ed;
signed main() {
	cerr << (&ed - &st) / 1024 / 1024 << "MB ---------------------------" << endl;
	CH[0] = 'R', CH[1] = 'L'; CH[2] = 'D'; CH[3] = 'U';
	
	n = read (); m = read ();
	rep (i, 1, n) scanf ("%s", a[i] + 1);
	rep (i, 1, n) rep (j, 1, m) tot += a[i][j] == '1';
	
	sx = read (); sy = read (); tx = read (); ty = read ();
	
	dfs (tx, ty);
	if (cnt < tot) return puts ("-1"), 0;
	reverse (S.begin (), S.end ());
	for (auto u : S) to (sx, sy, u);
	
	bfs ();
	
	for (auto u : ans) putchar (u); putchar (10);
	
	return 0;
}

这程序好像有点Bug,我给组数据试试?

詳細信息

Test #1:

score: 100
Accepted
time: 2ms
memory: 11940kb

input:

2 2
11
11
1 1 2 2

output:

RDLRULRDRLURLDR

result:

ok Valid Solution (Length = 15).

Test #2:

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

input:

2 2
10
01
1 1 2 2

output:

-1

result:

ok No Solution.

Test #3:

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

input:

1 1
1
1 1 1 1

output:



result:

ok Valid Solution (Length = 0).

Test #4:

score: 0
Accepted
time: 0ms
memory: 16136kb

input:

5 4
1111
1111
1111
1111
1111
4 2 4 2

output:

LLURRRDDLLLDRRRDLLLRRRULLLURRRUULLLDRRDLDRRDLLLUURRRULLLURRRLLLDRRRDLLLDDRRRULL

result:

ok Valid Solution (Length = 79).

Test #5:

score: 0
Accepted
time: 1ms
memory: 9912kb

input:

5 5
11111
10101
11111
10101
11111
1 4 5 5

output:

RRRRDDLLUDLLDDRRUDRRUDLLLLUUUDRRRRUULLLLRRDDDDRRLLLLUURRRRDUUULLLLDURRDURRDDLLDULLDDRRRR

result:

ok Valid Solution (Length = 88).

Test #6:

score: 0
Accepted
time: 1ms
memory: 5816kb

input:

5 3
111
100
111
001
111
4 3 3 2

output:

RDDLLRRUULLUURRLLDDRRDDLLRRUULLUURRLLDDR

result:

ok Valid Solution (Length = 40).

Test #7:

score: 0
Accepted
time: 0ms
memory: 11976kb

input:

5 4
1001
1101
1111
0011
0010
2 2 1 1

output:

ULURLLLDDUUURUDLDRRDRDLULULULDRDRRDLDURUUUDDLLLRULU

result:

ok Valid Solution (Length = 51).

Test #8:

score: 0
Accepted
time: 1ms
memory: 9916kb

input:

5 3
101
111
100
111
100
4 1 2 2

output:

RDUUUUDLLRRDDLLDURRLLUULLRRUDLLDDRRLLDUUUUDR

result:

ok Valid Solution (Length = 44).

Test #9:

score: 0
Accepted
time: 0ms
memory: 14060kb

input:

5 5
01110
10110
11110
11011
11100
2 4 5 1

output:

LDRDDULLLDRDRLLRULUULRDRRRULULRRLDDLDDLRRLULURRRDRLUULURLLRDRDLLLUDDRDL

result:

ok Valid Solution (Length = 71).

Test #10:

score: 0
Accepted
time: 2ms
memory: 14100kb

input:

5 3
011
111
110
111
011
3 1 2 1

output:

LURULLURLDRRDLDLDRLURRLULRRULRDLDLDRRDLRULLURUL

result:

ok Valid Solution (Length = 47).

Test #11:

score: 0
Accepted
time: 1ms
memory: 12040kb

input:

4 5
11111
11111
11111
11111
3 2 1 3

output:

LLURRRRDLRUULLLLURRRRLLLLDRRRRDLLLLDRRUUURRDLLLLDRRRRDLLLLRRRRULLLLUURLDRRRRULL

result:

ok Valid Solution (Length = 79).

Test #12:

score: 0
Accepted
time: 1ms
memory: 13984kb

input:

5 5
11111
10101
11111
10101
11111
2 5 1 1

output:

LLLLUURRDURRDUUULLDULLDURRRRDDLLLLDDRRRRLLUUUULLRRRRDDLLLLDDRRRRUDLLUDLLUUUDRRUDRRUULLLL

result:

ok Valid Solution (Length = 88).

Test #13:

score: 0
Accepted
time: 1ms
memory: 10028kb

input:

4 5
11111
10000
11111
00001
1 3 4 5

output:

DRRRRDDLLLLRRRRUULLLLUDRDRRRDRDULLLLUURRRRLLLLDDRRRRD

result:

ok Valid Solution (Length = 53).

Test #14:

score: 0
Accepted
time: 0ms
memory: 3796kb

input:

3 5
10100
00010
00111
1 3 1 1

output:

-1

result:

ok No Solution.

Test #15:

score: 0
Accepted
time: 1ms
memory: 12056kb

input:

4 5
10001
11111
11100
11111
4 5 3 1

output:

LLDRRDULLLLDURRUURRLLLLRRDRRLLRRDRRLLLLRRUURRUDLLLLUDRRDLL

result:

ok Valid Solution (Length = 58).

Test #16:

score: 0
Accepted
time: 1ms
memory: 9956kb

input:

3 5
11111
10100
11111
1 2 3 5

output:

RRRRDDLLUDLLRRRRUULLLLRRDDRRLLLLUURRRRLLDULLDDRRRR

result:

ok Valid Solution (Length = 50).

Test #17:

score: 0
Accepted
time: 0ms
memory: 3796kb

input:

4 5
01110
10101
11011
10111
1 3 2 3

output:

-1

result:

ok No Solution.

Test #18:

score: 0
Accepted
time: 1ms
memory: 12076kb

input:

5 5
11111
11111
11111
11111
11111
1 3 5 2

output:

LLLDRRRRDLLLLDRRRRDLLLLRRRRULLLLURRRRUUDLLLLURRRLDDDDLRRRULLLLDUURRRRULLLLURRRRLLLLDRRRRDLLLLDRRRRDLLL

result:

ok Valid Solution (Length = 102).

Test #19:

score: 0
Accepted
time: 0ms
memory: 14248kb

input:

5 5
11111
10101
11111
10101
11111
5 1 2 3

output:

ULLUURRDURRDDDDLLLLUDRRRRUULRUULLLLDDRRDUUDRRDDLLLLUURLUURRRRDULLLLDDDDRRUDRRUULLU

result:

ok Valid Solution (Length = 82).

Test #20:

score: 0
Accepted
time: 0ms
memory: 9960kb

input:

5 5
11111
10000
11111
00001
11111
4 5 5 3

output:

RRLLLLDDRRRRDDLLLLRRRRUULLLLUURRLLDDRRRRDDLLRRUULLLLUURRRRLLLLDDRRRRDDLLLLRR

result:

ok Valid Solution (Length = 76).

Test #21:

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

input:

5 5
01010
10101
10101
11001
10011
4 1 5 4

output:

-1

result:

ok No Solution.

Test #22:

score: 0
Accepted
time: 1ms
memory: 9960kb

input:

5 5
10101
11111
10101
11111
11111
3 1 2 4

output:

LDUUURRRRDDDULLDUUDRRUUULLLLRRRRDLLLLDDRRUURRDDLLLLDRRRRLLLLUUURRDUUDLLUDDDRRRRUUUDL

result:

ok Valid Solution (Length = 84).

Test #23:

score: 0
Accepted
time: 0ms
memory: 14016kb

input:

5 5
00001
11111
01110
01111
01111
1 5 5 2

output:

LLLDRRRDLLDRRRLLLLDURURRULLLURRRDLDLDLDRRRULLLURRURUDLLLLRRRDLLDRRRDLLL

result:

ok Valid Solution (Length = 71).

Test #24:

score: 0
Accepted
time: 0ms
memory: 3772kb

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: 16336kb

input:

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

output:

LLURRRRRRRDLLLLDLLLDRRRRRRRULLLRRRDLLLLLLLURRRURRRRUULLLLLLLURRRRRRRULLLLLLLURRRRRRRULLLLLLLURRRRRRRLLLLLLLDRRRRRRRDLLLLLLLDRRRRRRRDLLLLLLLDRRRRRRRDLLLLLLLDRRRDDUUUUURUUUUUDDRRRDLLLLLLLDRRRRRRRDLLLLLLLDRRRRRRRDLLLLLLLDRRRRRRRDLLLLLLLRRRRRRRULLLLLLLURRRRRRRULLLLLLLURRRRRRRULLLLLLLUURRRRURRRULLLLLLLDR...

result:

ok Valid Solution (Length = 333).

Test #26:

score: 0
Accepted
time: 1ms
memory: 9956kb

input:

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

output:

ULLUURRDURRDDDDLLLLUDLRRRRRUULRUUUULLDULLDUUUUDRRDUUDRRDUUDLLLLLRDDLRRRRRDDLLLLLRDDLRRRDLDLDRRRLDDRLLLLLDDRRRRRLDDRLLLLLDUUDRRDUUDRRDUUUUDLLUDLLUUUURLUURRRRRLDULLLLDDDDRRUDRRUULLU

result:

ok Valid Solution (Length = 179).

Test #27:

score: 0
Accepted
time: 1ms
memory: 12036kb

input:

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

output:

RUULLLLLLLLLUURRRRRRRRRUDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLRRRRRRRRRUULLLLLLLLLUURRRRRRRRRUULLLLLLLLLUURRRRRRRRRUULLLLLLLLLUURRRRRRRRRLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDURRRRRRRRRUULLLLLLLLLUUR

result:

ok Valid Solution (Length = 231).

Test #28:

score: 0
Accepted
time: 0ms
memory: 4072kb

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: 2ms
memory: 14076kb

input:

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

output:

ULLDDLDRRRURRDDLLLLLDDRRDURRRDUUDLLLLLUURRRRRUUUULULLURRRDULLLLLRRDRRDRDDLLLRDLLLURUULRRRDDRRDDDRRDDRRRLUURULLLDRLLLDDRDRRDRRLLLLLUDRRRULLULUUUURRRRRUULLLLLDUUDRRRUDRRDDLLLLLDDRRURRRDLDDLLU

result:

ok Valid Solution (Length = 189).

Test #30:

score: 0
Accepted
time: 2ms
memory: 18072kb

input:

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

output:

LLLULLLLDRRDRRRRRLLLLLLRULLUUUURRRRRRRDLDRLLDRLULLLURRLLDRRRRURUULLLLURLLULURRDURRRRDLDRLURULLLLLLDLDDRLUURRDRDRRRRDLLLLLLLDDDRRRRDRRRLLULULULULULULLRRRDRRRRDDDLLLLLLLDRRRRDRDRRUULRDDLDLLLLLLURULRDLDRRRRUDRRULULLRULLLLUURURRRRDLLRRULLLULRDLLRDLDRRRRRRRUUUULLURLLLLLLRRRRRDRRDLLLLULLL

result:

ok Valid Solution (Length = 283).

Test #31:

score: 0
Accepted
time: 0ms
memory: 3772kb

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: 2ms
memory: 14424kb

input:

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

output:

RRRRRRRRRDLLLLLLLLLDRRRRRRRRRDLLLLLLLLLDRRRRRRRRRDLLLLLLLLLRRRRRRRRRULLLLLLLLLURRRRRRRRRULLLLLLLLLURRRRRRRRRUULLLLLLLLLURRRRRRRRRLLLLLLLLLDRRRRRRRRRDLLLLLLLLLRRRRRDDDRRRRRLLLLLLLLLDRRRRRRRRRDLLLLLLLLLRRRRRRRRRULLLLLLLLLUURRRRRRRRRULLLLLLLLLURRRRRRRRRULLLLLLLLLURRRRRRRRRLLLLLLLLLDRRRRRRRRRDLLLLLLLLLD...

result:

ok Valid Solution (Length = 329).

Test #33:

score: 0
Accepted
time: 0ms
memory: 18344kb

input:

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

output:

UDLLUDLLUDLLUDLLDDRRUDRRUDRRUDRRDDLLUDLLUDLLUDLLDDRRUDRRUDRRUDRRDDLLUDLLUDLLUDLLUDLRRRRRRRRRUUUDLLLLLLLLLRUUUDLRRRRRRRRRUUUDLLLLLLLLLRUUUDLRRRRRRRRRDDDLDLLLLLLLDLDDDRRRRRRRRRLDUUURLLLLLLLLLDUUURRRRRRRRRLDUUURLLLLLLLLLDUUURRRRRRRRRLDULLDULLDULLDULLDDRRDURRDURRDURRDDLLDULLDULLDULLDDRRDURRDURRDURRDDLLD...

result:

ok Valid Solution (Length = 313).

Test #34:

score: 0
Accepted
time: 0ms
memory: 14244kb

input:

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

output:

RDDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLRRRRRRRRRUULLLLLLLLLUURRRRRRRRRUULLLLLLLLLUURRRRRRRRRUDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDURRRRRRRRRUULLLLLLLLLUURRRRRRRRRUULLLLLLLLLUURRRRRRRRRLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDDR

result:

ok Valid Solution (Length = 231).

Test #35:

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

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: 12204kb

input:

5 10
1001011101
1111111111
1000011001
1111111111
1101110010
4 3 4 7

output:

LLUDLDDDURRRRDLLRRURRDURRRDUUULURLDLLLLDLRUURRLLDRRRRRDDLLLLLLLLLUURRRRDDRDDRRRRUULLLLLLLLLDDRRRRRDLLRRUURLDLLLLDLRULUUUDRRRUDRRURRLLDRRRRUDDDLDULL

result:

ok Valid Solution (Length = 147).

Test #37:

score: 0
Accepted
time: 0ms
memory: 3848kb

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: 16172kb

input:

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

output:

URURRRDLDLDLLDDRRUDRRRRRRDDDURLLLDULLLLDRRLLULLDUURRRRRRLLLLLLDRRRRRRRRUURULLLLLURRULURUDRRRDDULRUULRDLLLLDLRRDRLLLLRDRRRRRDLLLLLLLLLUURRURURULLLLRDLDDRRDDRRDDLDRLLLLURURURRUULLLLLLLLLDRRRRRDRLLLLRDRRLDLLLLDRLUURLUDDRRRDURULURRULLLLLURUURRRRRRRRDLLLLLLRRRRRRUUDLLULLRRDLLLLUDLLLRUDDDRRRRRRDURRDDLLDLD...

result:

ok Valid Solution (Length = 308).

Test #39:

score: 0
Accepted
time: 0ms
memory: 20272kb

input:

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

output:

LLLLLLLLURRRRRRRRRDDLLLLLLLLLDRRRRRRRRRLLLLLLLLLURRRRRRRRRUUULLLLLLLLLURRRRRRRRRULLLLLLLLLURRRRRRRRRULLLLLLLLLURRRRRRRRRLLLLLLLLLDRRRRRRRRRDLLLLLLLLLDRRRRRRRRRDLLLLLLLLLDRRRRRRRRRDLLLLLLLLLDRRRRRRRRRLLLLLUUUUULLLLLRRRRRRRRRDLLLLLLLLLDRRRRRRRRRDLLLLLLLLLDRRRRRRRRRDLLLLLLLLLDRRRRRRRRRDLLLLLLLLLRRRRRRR...

result:

ok Valid Solution (Length = 413).

Test #40:

score: 0
Accepted
time: 0ms
memory: 16032kb

input:

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

output:

LLLLLLUURRDURRDURRDURRDDLRUUUULLDULLDULLDULLDUUURRDURRDURRDURRDUUUUDLLDUUDLLDUUDLLDUUDLLDUUDLRRRRRRRRRDDLLLLLLLLLRDDLRRRRRRRRRDDLLLLLLLLLRDDLRRRRRRRUUUULULLLLLULUUUURRRRRRRLDDRLLLLLLLLLDDRRRRRRRRRLDDRLLLLLLLLLDDRRRRRRRRRLDUUDLLDUUDLLDUUDLLDUUDLLDUUUUDRRUDRRUDRRUDRRUUUDLLUDLLUDLLUDLLUUUURLDDRRUDRRUDR...

result:

ok Valid Solution (Length = 313).

Test #41:

score: 0
Accepted
time: 2ms
memory: 16200kb

input:

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

output:

RRRRDDLLLLLLLLLRRRRRRRRRUULLLLLLLLLUURRRRRRRRRUULLLLLLLLLUURRRRRRRRRUDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDDRRRRRLLLLLUURRRRRRRRRUULLLLLRRRRRDDLLLLLLLLLDDRRRRRRRRRDDLLLLLLLLLDURRRRRRRRRUULLLLLLLLLUURRRRRRRRRUULLLLLLLLLUURRRRRRRRRLLLLLLLLLDDRRRR

result:

ok Valid Solution (Length = 239).

Test #42:

score: 0
Accepted
time: 0ms
memory: 3848kb

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: 2ms
memory: 16208kb

input:

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

output:

RRRRDLLRRURRRRDLLRRUULLULLLDRLULLURRULLLURRULLLURURRRRRRRRDDLLLDRRRDDDLRUULLDULLRRRRULLLUUDLLUDRRRRRUULLLLLLLLLRDLDRRRDLLDLRRRRDLLDLLRRRRRRRDRRDLLLLLLLLLDRLURRRRRUULUURRRRRULRDLLLLLLLLLDRRDRRRRRRRLLDLLDRRRRLDLLDRRRDLDRLLLLLLLLLUURRRRRDULLDUULLLURRRRLLUDLLUURLDDDRRRDLLLDDRRRRRRRRURULLLURRULLLURRULLUL...

result:

ok Valid Solution (Length = 329).

Test #44:

score: 0
Accepted
time: 0ms
memory: 14088kb

input:

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

output:

LLLURRULLURRRRRRRDDLLDLDDRDLLLDRRRRRUDLLLLLULLLDLRUURRULRDRLLLLUDRDRRRRRRURURULRDLDLLULRURUULRDRRUUUULLLLLLDRRRRLLLLLRURRRRRRDDLLLLLLLDLLDUUUURLDDDRRRRDRLLLDLRRRRLLDLLRRRRLDLLLRDRRRRDDDLRUUUUDLLDLLLLLLLDDRRRRRRURLLLLLRRRRDLLLLLLUUUURRDRLUURURLULLDLDRLURURURRRRRRDRDULLLLRDRLURRUURLDLLLULLLLLDURRRRRDL...

result:

ok Valid Solution (Length = 329).

Test #45:

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

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: 22284kb

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:

RRRRRRRRRRRDLLLLLLLLLLLDRRRRRRRRRRRDLLLLLLLLLLLDRRRRRRRRRRRDLLLLLLLLLLLDRRRRRRRRRRRDLLLLLLLLLLLDRRRRRRRRRRRDLLLLLLLLLLLDRRRRRRRRRRRDLLLLLLLLLLLDRRRRRRRRRRRLLLLLLLLLLLURRRRRRRRRRRULLLLLLLLLLLURRRRRRRRRRRULLLLLLLLLLLURRRRRRRRRRRULLLLLLLLLLLURRRRRRRRRRRULLLLLLLLLLLURRRRRRRRRRRULLLLLLLLLLLURRRRRRRRRRRUU...

result:

ok Valid Solution (Length = 973).

Test #47:

score: 0
Accepted
time: 0ms
memory: 26600kb

input:

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

output:

ULLLLLLLLLLLLLLLLDDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRDDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLDDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDLLLLLLLLLLLLLLLLUUUDRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLUUUURRDURRDURRDURRDURRDURRDURRDURRDUUULLDULLDULLDULLDULLDULLDULLDULLDUUURRDURRDURRDURRDURRDURRDURRDURRDUUULLDULLDULLDULLDULLDULLDUL...

result:

ok Valid Solution (Length = 1063).

Test #48:

score: 0
Accepted
time: 0ms
memory: 14024kb

input:

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

output:

RRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRUULLLLLLLLL...

result:

ok Valid Solution (Length = 840).

Test #49:

score: 0
Accepted
time: 0ms
memory: 3724kb

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: 0ms
memory: 22396kb

input:

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

output:

LLLLDDRRRRDLLLRRRURRRRRRDLLLLRRRRURRDURRDURRRDUUULLLLLLDRRRRLLLLULLDULLDULURULLLLDULLDUUURRRRRRRRRRRRRRRRDLDRDLRULLLLDUURLDLLLLDRLULURRRLLLLRDRRRRRRRRURUUULLLLLDULLLLLLLLLDRRRLLLUURRRRRULLLLLLLLURRULURRRULLLLUURRRDLRURRRRRRRRRRRRRRDDLLLURLDLLUDLLUDLLUDLLDRRDRRUDRRUDRRRRRDLLLDRRRDULLLLDULLDULLURLDRRR...

result:

ok Valid Solution (Length = 1125).

Test #51:

score: 0
Accepted
time: 0ms
memory: 20288kb

input:

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

output:

LULLLLLLLLLURRRRRRRRRRRRRRRDLLDRLLLDLLLLLLLLURRRRLLLLLLLDDRRRRRRRRRRRRDRRRDLLLLLULLLLLLLLLLDRRRDLLLDRRRRUDRRRULURRDRRRRRRRDLLLLLDRRRRRDLLDRRLLULLLLDRRLLLLLLLLLLLURULRDRRRRRURRLLLLLRRRDLLLLLLDRRRRRRRRRURRRRRRULLLLLURRRRRULLLLLLLULLLRDRDLLLLLLLURRRULLLURRRRRRRRRRDRRRRRUUUDLRDLLLUURLDLLLLLLLLLLLLUURRRD...

result:

ok Valid Solution (Length = 1169).

Test #52:

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

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: 0ms
memory: 20232kb

input:

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

output:

LLLLLLLDRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLURRRRRRRRRRRRR...

result:

ok Valid Solution (Length = 1135).

Test #54:

score: 0
Accepted
time: 0ms
memory: 22572kb

input:

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

output:

ULLLLUURRDURRDURRRRRRRRRRRRRRDDLLUDLLUDLLUDLLUDLLUDLLDDLLLLUDLLDDRRUDRRUDRRUDRRRRRRRRRRRRDDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLDDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRDDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLRRRRRRRRRRRRRRRRRRRUUUDLLLLLLLLLLLLLLLLLLLRUUUDLRRRRRRRRRRRRRRRRRRRUUUUUDLLDUUDLLDUUDLLDUUDLLDUUDLLD...

result:

ok Valid Solution (Length = 1171).

Test #55:

score: 0
Accepted
time: 0ms
memory: 14432kb

input:

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

output:

DRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUDLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLDURRRRRRR...

result:

ok Valid Solution (Length = 479).

Test #56:

score: 0
Accepted
time: 0ms
memory: 3772kb

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: 3ms
memory: 20648kb

input:

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

output:

LLLLLLLLLLLLLURRRRRRRRRRRRRRRRRRRDLDLLLURLDLLLLLLLLLLLLLLLDRRDLDDLDDRRRRRRRRRRRRRRRRRRRDDLLUDLLLLURLDLLUDLLUDLLLURLDLLLURLDLLDRRRDLLLLDRRRDRDLRURRRRDLRURRRRDURRRDLRURRDURRDUUULURLDLLDRLUUDLLDULLDULLDUUDLLUDLLUDLDRRLLURRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLDRLURRRULLLURRRRULLLULURLDRRRRRRRRRRRRRRRRRRRUUU...

result:

ok Valid Solution (Length = 1295).

Test #58:

score: 0
Accepted
time: 0ms
memory: 20316kb

input:

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

output:

LLLLLLLLLLLDRRRRRRRRRRRRRRRURRRRDLDLLDLLLLLLURRRRLLLLDLLLLLURRRLLLLLDDLLLDRRRRRRRRRURRRRRRRRRRDLLDLLLLLURRRLLLDLLLDLLLLURRLLDLLLLLDRRRDLLDRRRRRRRRRRRRRRRURRRDLDLLLLLLLLLLLDRRRRRRRRRRRRDLLLLDLLLLLLLDLDDRRRRRRRRRRRULLLLLLLLLURRRRRRRRRURLLLRRDLLLLLLLLLDRRRRRRRRRDRLLLLLLLLLLLLULLLLLLLDRRRRRLLLLLUURRRRUL...

result:

ok Valid Solution (Length = 1317).

Test #59:

score: 0
Accepted
time: 0ms
memory: 4092kb

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: 2ms
memory: 27008kb

input:

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

output:

LLLLURRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLDLLLLLDRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLURRRRRURRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLURRRRRRRRRRRRRRRRRRRULLLLLLLLLLLLLLLLLLLURRRRRRRRRRRRRRRRRRRULLLLL...

result:

ok Valid Solution (Length = 1635).

Test #61:

score: 0
Accepted
time: 4ms
memory: 22696kb

input:

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

output:

LLUURRDURRRRRRRRRRRRRRRRDDLLUDLLUDLLUDLLUDLLUDLLUDLLDDRRUDRRUDRRUDRRUDRRUDRRUDRRUDLLLLLLLLLLLLLLLLUDLLUDLRRRRRUUUDLRRRRRRRRRRRRRRRUUUULLDULLDULLDULLDULLDULLDULLDULLDULLDUUURRDURRDURRDURRDURRDURRDURRDURRDURRDUUULLDULLDULLDULLDULLDULLDULLDULLDULLDUUURRDURRDURRDURRDURRDURRDURRDURRDURRDUUULLDULLDULLDULL...

result:

ok Valid Solution (Length = 1215).

Test #62:

score: 0
Accepted
time: 0ms
memory: 22716kb

input:

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

output:

RDDLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLUDRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRDDLLLLL...

result:

ok Valid Solution (Length = 979).

Test #63:

score: 0
Accepted
time: 0ms
memory: 3772kb

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: 0ms
memory: 20680kb

input:

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

output:

LLLLLLLLLLLLLLDRDLDRDRRRRRRRRRRRRRRRRRRDDLLLLUDLLLLUDLLLLLUDLLLLLDDRRRRULLRRDRRRRRRRRULLLRRRDRRUDRRRRDLDLLUDLLLLLLLLURRRRRLLLLLDLLLLURLDLLUDLLDRDLDRRURRRRUDRRRRRULLLRRRDRRRUDRRUDRRRDLLDLLLURLDLLLLLLLURRLLDLLLLLLDRRRRDLLLLLDRDDURRDUUDRRDURRRDURRDURRDURRRRDURRRDLRUULURUULRDDLLLUDLLUDLDULLLLDRRLLULURRR...

result:

ok Valid Solution (Length = 1225).

Test #65:

score: 0
Accepted
time: 2ms
memory: 30608kb

input:

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

output:

LLLLLLLLLLLLLLULLLLLDRRRDRRRRRDLLLLLLLLDRRRRRDLLLDRRRRURRRRRRRRRRRRRDLLLLLLLLLLLRRRRRRRRRRRUULLLLURUDRRRULRDLLLLDLLUUDLLLDRLLLLRRRUURLDRRRDRRRRRRDLLLLLLLLLLLLLDLLLLLLUDRRURRRULLLLLUURLDRRRRRRRRULLLLLULLLUUURRRRRULLLULLDUURRRULULLDUUURRRRRRRRRULLLLLLLLLURRRRRRRRRRRRRRRRRRRDLLLLDLLLDRDLLLLLLLLDRRRRRRR...

result:

ok Valid Solution (Length = 1467).

Test #66:

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

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: 0ms
memory: 31312kb

input:

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

output:

LLLLLLLLLLLLLLLLLLLLLLLURRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRRRRRRD...

result:

ok Valid Solution (Length = 3039).

Test #68:

score: 0
Accepted
time: 0ms
memory: 14332kb

input:

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

output:

ULLLLLLLLLLLLLLLLLLLLLLLLDDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRDDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLDDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRDDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLDDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRDDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDL...

result:

ok Valid Solution (Length = 2279).

Test #69:

score: 0
Accepted
time: 2ms
memory: 24788kb

input:

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

output:

RRRRRRRRRRRRRRRRRRRUDLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLL...

result:

ok Valid Solution (Length = 1854).

Test #70:

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

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: 3ms
memory: 20312kb

input:

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

output:

LLLLLLLLLLLLLLLLLLLLLLLLLLLLLDRRRRDLLLLDDRRRRUDRRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLURLDLLLLLLLLLLLURRLLDLLUDLLUDLLLLLDRRDLLLLLLDDRRRULRDRRRUDRRRRRRRRRRRRRRRRRRRRRRRDDLLLURLDLLLLURLDLLLLLLLLURLDLLLLLURRLLDLLLURLDLLUDLLLLDDRRUDRRRRRRRRRRULLLLRRRRDRRRUDRRRULRDRRRRULLRRDRRRRRRRDLLLDLLUDLLLLUDLLLURLDLLUDLLLU...

result:

ok Valid Solution (Length = 2723).

Test #72:

score: 0
Accepted
time: 0ms
memory: 33520kb

input:

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

output:

LLLLURULURRRRRRRRRRRRRRRRRRRRRRRRRRRRRDLLLDLLLLLLLLURRRRRRLLLLLLDLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRDLLLLLLLLDLLLLLURRRLLLLLLLLLLLLDRRRDLDDRLUULLDDLRUULRRRRURRRRDLLDRRRRRRDLLLLLLRRRRRRURRRRURRULLRRDRRRRRRRRRRRDLLLLLLDRRRRRRLLLLLLLLLLLURRLLDLLLLRRRRRRRRRURRRRRRUULLLLLURRRRRULLURRLLDLLRRRRDLLLLLDLLLLRRRRRR...

result:

ok Valid Solution (Length = 3403).

Test #73:

score: 0
Accepted
time: 0ms
memory: 4084kb

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: 0ms
memory: 26860kb

input:

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

output:

LLLLLLLLLLLLLLLLLLLLLLLLLURRRRRRRRRRRRRRRRRRRRRRRRRRRRRDLLLDLLLLLLLLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDLLL...

result:

ok Valid Solution (Length = 2543).

Test #75:

score: 0
Accepted
time: 0ms
memory: 29348kb

input:

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

output:

LLLLLLLLLLLLLLLLLLLLLLLUURRDURRDURRDURRDURRDURRDURRDURRDURRDURRDURRDURRRRRRDDLLUDLLDDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLDDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRRRDDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLRRRRRRRRRRRRRRRRRRRRRRRRRRRRRUUUUUDLLDUUDLRRRDDLLLLLLLLL...

result:

ok Valid Solution (Length = 1951).

Test #76:

score: 0
Accepted
time: 0ms
memory: 18532kb

input:

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

output:

RUULLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLLLLLLLLLLLLLLLLLLLLLLLLLLDDRRRRRRRRRRRRRRRRRRRR...

result:

ok Valid Solution (Length = 1445).

Test #77:

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

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: 31420kb

input:

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

output:

LURRRRRDLRURRRRRRRRRDLLLLLLRRRRRRURRRRRRDURRRRRRRDLRURRDUUULLLLLLLDRRRRLLLLULLDULLDULLLLLLDRRRLLLULLDULLLLLLDRRLLULLLURRULLURULUULURRULLURURRRRRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLURRLLDLLLLURLDLLLLURLDLLLLUDLLLLLLLLLDDLDRDRRRRRRRRRRRRRRRRRRRRRRRRRDLLDRRDULLLDRLULLUDLDRLULLLLDRLUURLDLLUDLLLURLDLLDRRRRRLLLL...

result:

ok Valid Solution (Length = 2261).

Test #79:

score: 0
Accepted
time: 0ms
memory: 20588kb

input:

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

output:

LLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRDLLLLLLLLLLRRRRRRRRRRURRRULLLLLURRRRRRRRDLDRRRDLLLLLLRRRRRRURRULLURRRRRRRRRDLLLLLDRRDLLDRRRURRDDLLLLLDRRDLLLLLLLLLULURRRRRRDLLLLRRRRULLLLLLLLLLLDLLLLLURRRLLLDLLLLLDRRRRRRRRRRRURRDDLLLLLLLLLLLLDRDLLLDRRRRRRRRRRRRRRRRRRRRRULLLULLLURRRRRRRRRRRRRRDLDLLLLLDRRRRRRDLLLL...

result:

ok Valid Solution (Length = 2822).

Test #80:

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

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: 3ms
memory: 35800kb

input:

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

output:

LLLLLLLLLLLURRRRRRRRRRRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLDLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDLLLLLLLLLLLLLLLLLLLLLLLLLLLLLRRRRRRRRRRRRRRRRRRRRRRRRRRRRRULLLLLLLLLLLLLLLLLLLLLLLLLLLLLURRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLR...

result:

ok Valid Solution (Length = 3643).

Test #82:

score: 0
Accepted
time: 0ms
memory: 23144kb

input:

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

output:

LLLLUURRDURRDURRRRRRRRRRRRRRRRRRRRRRRRDDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLDDLLUDLLUDLLDDRRUDRRUDRRUDRRRRRRRRRRRRRRRRRRRRRRDDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLDDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRUDRRDDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUDLLUD...

result:

ok Valid Solution (Length = 2727).

Test #83:

score: 0
Accepted
time: 0ms
memory: 22768kb

input:

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

output:

RRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRRRRRRRUULLLLLLLLLLLLLLLLLLLLL...

result:

ok Valid Solution (Length = 2319).

Test #84:

score: 0
Accepted
time: 0ms
memory: 3708kb

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: 0ms
memory: 26504kb

input:

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

output:

LDRRURRRRRRRRRRRRRRRRRRRRRRRRRRRDLLLDLLLLLURRRLLLDLLLLUDLLUDLLUDLLLLLLURRRLLLDLLLLLDDLLDDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDDLLLURLDLLUDLLUDLLUDLLLUDLLLLURLDLLLLUDLLLURLDLLLLLDRDLLDDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRDDLLLLURRLLDLLUDLLLLURLDLLLLLLURRLLDLLLLURRLLDLLLURLDLLUDLLLDRRRDLLLLDDRRRULRDRRRRRRRRRRRRRRRR...

result:

ok Valid Solution (Length = 2725).

Test #86:

score: 0
Accepted
time: 3ms
memory: 33192kb

input:

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

output:

LLLLLLLLLLDLLLLLLLLLLLLLLLLLUURRRRRRRRDLLLLLLRRRRRRURRRRRRRDLLLLLRRRRRURULLLLLLLLLLLLULLULLDDRLUUURRRULLLURRRULLLURRRRRRRRRRRRRRRRRRRRRURRRRRRRRDLLLLLLDLLLLLLDLDLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRRRRDLLLDLLUDLDLLLLDRRRRRRRRRRRDLDRLLLLLLLLLLLDLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRRULRDRRRRRRRRULLLLLRRRRRD...

result:

ok Valid Solution (Length = 3395).

Test #87:

score: 0
Accepted
time: 0ms
memory: 4108kb

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: 4ms
memory: 35024kb

input:

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

output:

LLLLLLLLLLLLLLLLLLLLLLLLLLLLLDRRRRRRRRRRRRRRRRRRRRRRRRRRRRRLLLLLLLLLLLLLLLLLLLLLLLLLLLLLUURRRRRRRRRRRRRRRRRRRRRRRRRRRRRULLLLLLLLLLLLLLLLLLLLLLLLLLLLLURRRRRRRRRRRRRRRRRRRRRRRRRRRRRULLLLLLLLLLLLLLLLLLLLLLLLLLLLLURRRRRRRRRRRRRRRRRRRRRRRRRRRRRULLLLLLLLLLLLLLLLLLLLLLLLLLLLLURRRRRRRRRRRRRRRRRRRRRRRRRRRRRU...

result:

ok Valid Solution (Length = 3653).

Extra Test:

score: 0
Extra Test Passed