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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#94585#2265. Short Codingwhatever#AC ✓3ms3508kbC++232.4kb2023-04-06 18:45:542023-04-06 18:45:58

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-04-06 18:45:58]
  • 评测
  • 测评结果:AC
  • 用时:3ms
  • 内存:3508kb
  • [2023-04-06 18:45:54]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
constexpr int N = 12;
int n, m, ans, use[N][N];
string str[N];
struct oper {
	int type;
	int l;
}a[N];
constexpr int D[4][2] = {{0, 1}, {-1, 0}, {0, -1}, {1, 0}};
int sx, sy, tx, ty;
bool check() {
	int x = sx, y = sy, dir = 3, pc = 1; 
	static int vis[N][N][4][N], ts;
	ts ++;
	while(vis[x][y][dir][pc] != ts) {
		vis[x][y][dir][pc] = ts;
		if(a[pc].type == 1) {
			pc = a[pc].l;
		}
		else if(a[pc].type == 2) {
			int dx = x + D[dir][0], dy = y + D[dir][1];
			if(use[dx][dy]) {
				pc = a[pc].l;
			} else {
				pc = pc % ans + 1;
			}
		}
		else if(a[pc].type == 3) {
			int dx = x + D[dir][0], dy = y + D[dir][1];
			if(use[dx][dy]) {
				x = dx, y = dy;
			}
			pc = pc % ans + 1;
		}
		else if(a[pc].type == 4) {
			dir = (dir + 1) % 4;
			pc = pc % ans + 1;
		}
		else if(a[pc].type == 5) {
			dir = (dir + 3) % 4;
			pc = pc % ans + 1;
		}
		if(x == tx && y == ty) return true;
	}
	// cout << "-------\n";
	return false;
}
bool dfs(int i) {
	if(i == ans + 1) {
		return check();
	}
	for(int u = 1; u <= ans; u ++) {
		a[i].type = 1;
		a[i].l = u;
		if(dfs(i + 1)) return true;
	}
	for(int u = 1; u <= ans; u ++) {
		a[i].type = 2;
		a[i].l = u;
		if(dfs(i + 1)) return true;
	}
	for(int u = 3; u <= 5; u ++) {
		a[i].type = u;
		if(dfs(i + 1)) return true;
	}
	return false;
}
int main() {
	// freopen("in.txt", "r", stdin);
	ios::sync_with_stdio(false), cin.tie(0);
	cin >> n >> m;
	for(int i = 1; i <= n; i ++) {
		cin >> str[i];
		str[i] = "#" + str[i];
	}
	for(int i = 1; i <= n; i ++) {
		for(int j = 1; j <= m; j ++) {
			use[i][j] = str[i][j] != '#';
			if(str[i][j] == 'S') sx = i, sy = j;
			if(str[i][j] == 'G') tx = i, ty = j;
		}
	}
	for(ans = 1; ; ans ++) {
		if(ans == 5) {
			cout << "5\n";
			cout << "LEFT\n";
			cout << "IF-OPEN 5\n";
			cout << "RIGHT\n";
			cout << "GOTO 2\n";
			cout << "FORWARD\n";
			exit(0);
		}
		if(dfs(1)) {
			cout << ans << '\n';
			for(int i = 1; i <= ans; i ++) {
				if(a[i].type == 1) {
					cout << "GOTO " << a[i].l << '\n';
				} else if(a[i].type == 2) {
					cout << "IF-OPEN " << a[i].l << '\n';	
				} else if(a[i].type == 3) {
					cout << "FORWARD\n";
				} else if(a[i].type == 4) {
					cout << "LEFT\n";
				} else if(a[i].type == 5) {
					cout << "RIGHT\n";
				}
			}
			exit(0);
		}
	}
	
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 2ms
memory: 3444kb

input:

4 2
S#
.#
.#
G.

output:

1
FORWARD

result:

ok correct answer!

Test #2:

score: 0
Accepted
time: 1ms
memory: 3496kb

input:

3 6
##S..#
#..##.
.G..#.

output:

2
FORWARD
RIGHT

result:

ok correct answer!

Test #3:

score: 0
Accepted
time: 0ms
memory: 3340kb

input:

3 7
....S##
.#.#...
##.#.G#

output:

2
FORWARD
LEFT

result:

ok correct answer!

Test #4:

score: 0
Accepted
time: 2ms
memory: 3424kb

input:

4 8
...S.#.#
##..#.#.
###...#.
#.#.#G.#

output:

3
FORWARD
FORWARD
LEFT

result:

ok correct answer!

Test #5:

score: 0
Accepted
time: 2ms
memory: 3424kb

input:

3 5
.S#..
.....
..#G.

output:

3
FORWARD
LEFT
FORWARD

result:

ok correct answer!

Test #6:

score: 0
Accepted
time: 2ms
memory: 3364kb

input:

10 10
.....S#...
...#......
....##....
.#.....#..
....#.....
..#.......
...#......
..........
.#...#....
G.#..#...#

output:

3
LEFT
FORWARD
IF-OPEN 2

result:

ok correct answer!

Test #7:

score: 0
Accepted
time: 2ms
memory: 3412kb

input:

7 9
.##S.#..#
.........
.........
...#...##
###..####
........#
.....##G#

output:

3
RIGHT
FORWARD
IF-OPEN 2

result:

ok correct answer!

Test #8:

score: 0
Accepted
time: 2ms
memory: 3480kb

input:

3 9
..#.#.#S#
#...#...#
.G....#.#

output:

3
FORWARD
RIGHT
FORWARD

result:

ok correct answer!

Test #9:

score: 0
Accepted
time: 2ms
memory: 3440kb

input:

4 5
#S...
..#..
.#..#
.#.G#

output:

3
RIGHT
FORWARD
FORWARD

result:

ok correct answer!

Test #10:

score: 0
Accepted
time: 0ms
memory: 3472kb

input:

6 8
..S..#.#
...#...#
....#..#
#.#.##..
.......#
.#..#G.#

output:

4
FORWARD
LEFT
FORWARD
RIGHT

result:

ok correct answer!

Test #11:

score: 0
Accepted
time: 2ms
memory: 3456kb

input:

9 10
S.........
.#..#....#
........#.
..........
.....#.#..
.#...#....
#..#.##.#.
..#..#...#
..#.#....G

output:

4
LEFT
FORWARD
RIGHT
FORWARD

result:

ok correct answer!

Test #12:

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

input:

10 4
#.S.
.#.#
##.#
##..
.#..
#...
#.##
..#.
.#..
G.##

output:

4
FORWARD
RIGHT
FORWARD
LEFT

result:

ok correct answer!

Test #13:

score: 0
Accepted
time: 3ms
memory: 3436kb

input:

9 9
#..#...S#
.#...##.#
.....##..
..#..#...
..#..#..#
.#..#.#.#
.###.....
..#.#.##.
G#....#.#

output:

4
RIGHT
FORWARD
LEFT
FORWARD

result:

ok correct answer!

Test #14:

score: 0
Accepted
time: 3ms
memory: 3452kb

input:

7 3
.S#
#..
..#
...
..#
.#.
.G.

output:

4
FORWARD
FORWARD
FORWARD
LEFT

result:

ok correct answer!

Test #15:

score: 0
Accepted
time: 3ms
memory: 3368kb

input:

6 6
..#S..
#.#.#.
.....#
#.#...
..#...
..G##.

output:

4
FORWARD
FORWARD
LEFT
FORWARD

result:

ok correct answer!

Test #16:

score: 0
Accepted
time: 2ms
memory: 3508kb

input:

6 8
....#S..
......#.
..##..#.
###.#.##
..#...#.
##.G#..#

output:

4
FORWARD
FORWARD
RIGHT
FORWARD

result:

ok correct answer!

Test #17:

score: 0
Accepted
time: 2ms
memory: 3416kb

input:

10 8
#..S.###
.#....##
.#......
....#.#.
#...#..#
........
....#.##
...#.###
.#.#...#
.#...G.#

output:

4
FORWARD
LEFT
FORWARD
IF-OPEN 3

result:

ok correct answer!

Test #18:

score: 0
Accepted
time: 2ms
memory: 3460kb

input:

7 6
...##S
#.....
....#.
...#.#
....#.
#.....
.....G

output:

4
FORWARD
RIGHT
FORWARD
IF-OPEN 3

result:

ok correct answer!

Test #19:

score: 0
Accepted
time: 2ms
memory: 3428kb

input:

4 8
.##..S..
#.###..#
.#...#..
...#G...

output:

4
RIGHT
FORWARD
FORWARD
FORWARD

result:

ok correct answer!

Test #20:

score: 0
Accepted
time: 3ms
memory: 3364kb

input:

3 10
##.......S
####.####.
...#..G##.

output:

4
RIGHT
FORWARD
LEFT
IF-OPEN 2

result:

ok correct answer!

Test #21:

score: 0
Accepted
time: 2ms
memory: 3424kb

input:

2 7
.#S.###
.#.G..#

output:

2
FORWARD
LEFT

result:

ok correct answer!

Test #22:

score: 0
Accepted
time: 2ms
memory: 3364kb

input:

2 7
.S#.#.#
G#.##.#

output:

2
FORWARD
LEFT

result:

ok correct answer!

Test #23:

score: 0
Accepted
time: 2ms
memory: 3396kb

input:

2 4
...S
##G#

output:

2
FORWARD
LEFT

result:

ok correct answer!

Test #24:

score: 0
Accepted
time: 2ms
memory: 3400kb

input:

2 7
S......
.G.....

output:

2
FORWARD
LEFT

result:

ok correct answer!

Test #25:

score: 0
Accepted
time: 1ms
memory: 3436kb

input:

2 3
#S#
..G

output:

2
FORWARD
LEFT

result:

ok correct answer!

Test #26:

score: 0
Accepted
time: 2ms
memory: 3492kb

input:

2 4
#.S#
#G##

output:

2
FORWARD
LEFT

result:

ok correct answer!

Test #27:

score: 0
Accepted
time: 2ms
memory: 3440kb

input:

3 6
.#S###
#....#
#G.#..

output:

2
FORWARD
LEFT

result:

ok correct answer!

Test #28:

score: 0
Accepted
time: 2ms
memory: 3400kb

input:

2 4
S.#.
#G##

output:

2
FORWARD
RIGHT

result:

ok correct answer!

Test #29:

score: 0
Accepted
time: 2ms
memory: 3444kb

input:

2 5
##..S
...G.

output:

2
FORWARD
LEFT

result:

ok correct answer!

Test #30:

score: 0
Accepted
time: 2ms
memory: 3444kb

input:

2 9
#S###....
G..##..##

output:

2
FORWARD
RIGHT

result:

ok correct answer!

Test #31:

score: 0
Accepted
time: 0ms
memory: 3376kb

input:

6 10
....S...##
.#...#....
..........
.#.#...#..
...#.##...
.G#...#...

output:

3
LEFT
FORWARD
IF-OPEN 2

result:

ok correct answer!

Test #32:

score: 0
Accepted
time: 2ms
memory: 3432kb

input:

3 3
S..
##.
##G

output:

3
IF-OPEN 3
RIGHT
FORWARD

result:

ok correct answer!

Test #33:

score: 0
Accepted
time: 2ms
memory: 3408kb

input:

5 5
..S..
.##..
.####
..#..
G.#.#

output:

3
IF-OPEN 3
LEFT
FORWARD

result:

ok correct answer!

Test #34:

score: 0
Accepted
time: 2ms
memory: 3400kb

input:

4 6
S#....
....#.
#.....
#...G.

output:

3
IF-OPEN 3
LEFT
FORWARD

result:

ok correct answer!

Test #35:

score: 0
Accepted
time: 2ms
memory: 3360kb

input:

3 6
.#..S#
..#..#
.##G.#

output:

3
IF-OPEN 3
RIGHT
FORWARD

result:

ok correct answer!

Test #36:

score: 0
Accepted
time: 2ms
memory: 3368kb

input:

4 3
..S
.#.
..#
G..

output:

3
IF-OPEN 3
LEFT
FORWARD

result:

ok correct answer!

Test #37:

score: 0
Accepted
time: 2ms
memory: 3404kb

input:

5 3
S..
##.
...
...
.G.

output:

3
IF-OPEN 3
RIGHT
FORWARD

result:

ok correct answer!

Test #38:

score: 0
Accepted
time: 0ms
memory: 3452kb

input:

8 2
.S
..
..
..
..
..
.#
G.

output:

3
IF-OPEN 3
LEFT
FORWARD

result:

ok correct answer!

Test #39:

score: 0
Accepted
time: 2ms
memory: 3380kb

input:

3 7
...#..S
#.#....
....G..

output:

3
IF-OPEN 3
LEFT
FORWARD

result:

ok correct answer!

Test #40:

score: 0
Accepted
time: 2ms
memory: 3468kb

input:

3 9
#......S.
...#.#...
.G.#.#...

output:

3
IF-OPEN 3
LEFT
FORWARD

result:

ok correct answer!

Test #41:

score: 0
Accepted
time: 0ms
memory: 3360kb

input:

2 9
.##..S...
##..##G.#

output:

4
IF-OPEN 3
LEFT
FORWARD
RIGHT

result:

ok correct answer!

Test #42:

score: 0
Accepted
time: 3ms
memory: 3368kb

input:

4 6
S..#.#
..#...
......
..#G#.

output:

4
FORWARD
FORWARD
LEFT
FORWARD

result:

ok correct answer!

Test #43:

score: 0
Accepted
time: 2ms
memory: 3404kb

input:

4 9
#..##S..#
##..#...#
#.......#
####.#G##

output:

4
IF-OPEN 3
LEFT
LEFT
FORWARD

result:

ok correct answer!

Test #44:

score: 0
Accepted
time: 0ms
memory: 3496kb

input:

3 8
....S...
.....#..
..#G#...

output:

4
FORWARD
RIGHT
FORWARD
LEFT

result:

ok correct answer!

Test #45:

score: 0
Accepted
time: 2ms
memory: 3424kb

input:

4 9
.#.S#####
..#.###..
.#....#.#
.####.G.#

output:

4
FORWARD
LEFT
FORWARD
RIGHT

result:

ok correct answer!

Test #46:

score: 0
Accepted
time: 0ms
memory: 3444kb

input:

4 3
..S
...
...
#G#

output:

4
IF-OPEN 3
LEFT
LEFT
FORWARD

result:

ok correct answer!

Test #47:

score: 0
Accepted
time: 2ms
memory: 3440kb

input:

2 7
#...S..
..#G##.

output:

4
IF-OPEN 3
RIGHT
FORWARD
LEFT

result:

ok correct answer!

Test #48:

score: 0
Accepted
time: 3ms
memory: 3484kb

input:

5 6
...S..
...#..
...#..
...#.#
#G..#.

output:

4
RIGHT
FORWARD
IF-OPEN 1
RIGHT

result:

ok correct answer!

Test #49:

score: 0
Accepted
time: 2ms
memory: 3324kb

input:

4 8
.#...#.S
..###...
........
....G..#

output:

4
FORWARD
IF-OPEN 4
LEFT
LEFT

result:

ok correct answer!

Test #50:

score: 0
Accepted
time: 2ms
memory: 3400kb

input:

3 4
#S..
##..
.#G#

output:

4
IF-OPEN 3
LEFT
FORWARD
RIGHT

result:

ok correct answer!

Test #51:

score: 0
Accepted
time: 2ms
memory: 3476kb

input:

4 6
#.S.#.
#..#..
..#...
..G##.

output:

3
IF-OPEN 3
LEFT
FORWARD

result:

ok correct answer!

Test #52:

score: 0
Accepted
time: 2ms
memory: 3356kb

input:

4 5
#..S.
#.#..
..#..
G#..#

output:

4
RIGHT
FORWARD
LEFT
FORWARD

result:

ok correct answer!

Test #53:

score: 0
Accepted
time: 3ms
memory: 3476kb

input:

5 5
#.#S#
#...#
##.##
##..#
.##.G

output:

5
LEFT
IF-OPEN 5
RIGHT
GOTO 2
FORWARD

result:

ok correct answer!

Test #54:

score: 0
Accepted
time: 0ms
memory: 3480kb

input:

5 6
##S..#
...#..
...#.#
...#..
..#G.#

output:

3
RIGHT
FORWARD
IF-OPEN 2

result:

ok correct answer!

Test #55:

score: 0
Accepted
time: 0ms
memory: 3412kb

input:

6 4
...S
..#.
....
....
....
G...

output:

3
IF-OPEN 3
LEFT
FORWARD

result:

ok correct answer!

Test #56:

score: 0
Accepted
time: 2ms
memory: 3480kb

input:

5 6
....S.
......
......
....#.
....G.

output:

3
IF-OPEN 3
LEFT
FORWARD

result:

ok correct answer!

Test #57:

score: 0
Accepted
time: 2ms
memory: 3444kb

input:

4 5
S###.
.####
.####
..G##

output:

3
IF-OPEN 3
LEFT
FORWARD

result:

ok correct answer!

Test #58:

score: 0
Accepted
time: 2ms
memory: 3364kb

input:

6 5
...S.
...#.
.#...
..##.
.##..
.G#..

output:

3
IF-OPEN 3
LEFT
FORWARD

result:

ok correct answer!

Test #59:

score: 0
Accepted
time: 2ms
memory: 3440kb

input:

5 4
..S.
#...
.#..
..#.
G...

output:

3
IF-OPEN 3
RIGHT
FORWARD

result:

ok correct answer!

Test #60:

score: 0
Accepted
time: 1ms
memory: 3392kb

input:

5 5
..#S#
.#..#
....#
..#.#
###G.

output:

1
FORWARD

result:

ok correct answer!

Test #61:

score: 0
Accepted
time: 2ms
memory: 3360kb

input:

10 10
#...S..#..
..#...#...
..#.#.#...
...#....##
##.....#.#
.....#.##.
.....#...#
...###....
..#.#.....
.#.#....#G

output:

4
FORWARD
LEFT
FORWARD
RIGHT

result:

ok correct answer!

Test #62:

score: 0
Accepted
time: 1ms
memory: 3420kb

input:

10 10
.#..S#...#
.....#....
...#...#.#
.##..#....
#....###.#
........##
...#..#...
##.#....##
...#....#.
#.#G...#.#

output:

3
IF-OPEN 3
RIGHT
FORWARD

result:

ok correct answer!

Test #63:

score: 0
Accepted
time: 2ms
memory: 3420kb

input:

10 10
.......S..
..........
..........
..........
........#.
..........
..........
..........
..........
........G.

output:

3
IF-OPEN 3
LEFT
FORWARD

result:

ok correct answer!

Test #64:

score: 0
Accepted
time: 2ms
memory: 3360kb

input:

10 10
....#S.#.#
.#....#...
.....#..#.
....#..#..
.#.....#.#
.......###
#....#.#..
..........
.#.#.##...
#....G.#..

output:

5
LEFT
IF-OPEN 5
RIGHT
GOTO 2
FORWARD

result:

ok correct answer!

Test #65:

score: 0
Accepted
time: 0ms
memory: 3360kb

input:

10 10
#...#..#.S
.##..#....
..###.#...
##.##.##..
#.#..##..#
.##.##...#
..#.##..#.
...#...##.
.#.#....##
#.##..G##.

output:

5
LEFT
IF-OPEN 5
RIGHT
GOTO 2
FORWARD

result:

ok correct answer!

Test #66:

score: 0
Accepted
time: 1ms
memory: 3380kb

input:

10 10
.........S
..........
..#.......
..........
.....#....
.#........
..........
..........
.......#..
.G.......#

output:

3
IF-OPEN 3
LEFT
FORWARD

result:

ok correct answer!

Test #67:

score: 0
Accepted
time: 2ms
memory: 3416kb

input:

10 10
.....#...S
...#....#.
......#.##
..#......#
#.#.##.#..
..#.##.#..
.......#..
#...#.....
#.#....#..
.#...#..#G

output:

5
LEFT
IF-OPEN 5
RIGHT
GOTO 2
FORWARD

result:

ok correct answer!

Test #68:

score: 0
Accepted
time: 2ms
memory: 3380kb

input:

10 10
......S...
..........
..........
..........
..........
...#....#.
..........
#.....#...
..........
.....#G...

output:

3
IF-OPEN 3
RIGHT
FORWARD

result:

ok correct answer!

Test #69:

score: 0
Accepted
time: 2ms
memory: 3364kb

input:

10 10
......##S.
........#.
....###...
....#.#..#
.##....#.#
.....#....
.....#....
..##......
....#.#.#.
.#....G...

output:

5
LEFT
IF-OPEN 5
RIGHT
GOTO 2
FORWARD

result:

ok correct answer!

Test #70:

score: 0
Accepted
time: 2ms
memory: 3376kb

input:

10 10
#.S#..#...
.......#.#
#..##..#.#
#...#...#.
#.###..##.
.....#.#.#
#.#..#...#
..##.#.#.#
####..#...
##..G#.#.#

output:

5
LEFT
IF-OPEN 5
RIGHT
GOTO 2
FORWARD

result:

ok correct answer!

Test #71:

score: 0
Accepted
time: 3ms
memory: 3356kb

input:

10 10
S#...#....
.#.#.#.##.
.#.#.#.#..
.#.#.#.#.#
.#.#.#.#..
.#.#.#.##.
.#.#.#.#..
.#.#.#.#.#
.#.#.#.#..
...#...##G

output:

5
LEFT
IF-OPEN 5
RIGHT
GOTO 2
FORWARD

result:

ok correct answer!

Test #72:

score: 0
Accepted
time: 2ms
memory: 3484kb

input:

10 10
S#..#...#.
.#.....#..
.#.....#..
.........#
##.#.#.#..
.#.#.#.#..
.#.#.#.#.#
.#.#.#.#..
.#.#.#.#..
...#...#.G

output:

3
IF-OPEN 3
LEFT
FORWARD

result:

ok correct answer!

Test #73:

score: 0
Accepted
time: 1ms
memory: 3460kb

input:

10 10
S.#.#.#.#.
#..#.#.#.#
.#..#.#.#.
#.#..#.#.#
.#.#..#.#.
#.#.#..#.#
.#.#.#..#.
#.#.#.#..#
.#.#.#.#..
#.#.#.#.#G

output:

4
FORWARD
LEFT
FORWARD
RIGHT

result:

ok correct answer!

Test #74:

score: 0
Accepted
time: 2ms
memory: 3380kb

input:

10 10
S.........
.########.
.#......#.
.#......#.
.#......#.
.#......#.
.#......#.
.#......#.
.########.
.........G

output:

3
IF-OPEN 3
LEFT
FORWARD

result:

ok correct answer!

Test #75:

score: 0
Accepted
time: 0ms
memory: 3436kb

input:

10 10
S.#.......
#.###.####
#......#.#
##.###....
.#.#...#.#
...#####.#
.#.#.#...#
.#.#...###
##.#####.#
.........G

output:

4
FORWARD
LEFT
FORWARD
RIGHT

result:

ok correct answer!

Test #76:

score: 0
Accepted
time: 2ms
memory: 3428kb

input:

10 10
S.#.......
#.###.####
#......#.#
##.###....
.#.#...#.#
...#####.#
.#.#.#...#
.#.#...###
##.#####.#
G.........

output:

5
LEFT
IF-OPEN 5
RIGHT
GOTO 2
FORWARD

result:

ok correct answer!