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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#578270#7516. Robot ExperimentLittleYoo#AC ✓4ms3652kbC++201.0kb2024-09-20 17:53:182024-09-20 17:53:19

Judging History

你现在查看的是最新测评结果

  • [2024-09-20 17:53:19]
  • 评测
  • 测评结果:AC
  • 用时:4ms
  • 内存:3652kb
  • [2024-09-20 17:53:18]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
#define int long long
string s;
set<pair<int, int>> ans;
map<pair<int, int>, int> vis, obs;
// map<pair<int, int>, int> obs;

void dfs(int now = 0, int x = 0, int y = 0)
{
	// cerr << now << ' ';
	// cerr << x << ' ' << y << '\n';
	++vis[{x, y}];
	if(now == s.length()) {
		ans.emplace(x, y);
		--vis[{x, y}];
		return ;
	}
	char c = s[now];
	int nx(x), ny(y);
	if(c == 'R') {
		++nx;
	} else if(c == 'L') {
		--nx;
	} else if(c == 'U') {
		++ny;
	} else {
		--ny;
	}
	if(obs[{nx, ny}] != 0) {
		dfs(now + 1, x, y);
	}
	else {
		dfs(now + 1, nx, ny);
		if(vis[{nx, ny}] == 0){
			++obs[{nx, ny}];
			dfs(now + 1, x, y);
			--obs[{nx, ny}];
		}
	}
	--vis[{x, y}];
}

void solve()
{
	int n;
	cin >> n;
	cin >> s;
	dfs();
	cout << ans.size() << '\n';
	for(auto &[x, y] : ans)
		cout << x << ' ' << y << '\n';
}

signed main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	int T = 1;
	// cin >> T;
	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: 3628kb

input:

2
RU

output:

4
0 0
0 1
1 0
1 1

result:

ok 5 lines

Test #2:

score: 0
Accepted
time: 0ms
memory: 3552kb

input:

4
LRUD

output:

4
0 -1
0 0
1 -1
1 0

result:

ok 5 lines

Test #3:

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

input:

20
LLLRLRLRLLLRLLRLRLLR

output:

8
-6 0
-5 0
-4 0
-3 0
-2 0
-1 0
0 0
1 0

result:

ok 9 lines

Test #4:

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

input:

1
D

output:

2
0 -1
0 0

result:

ok 3 lines

Test #5:

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

input:

20
UUUUUUUUUUUUUUUUUUUU

output:

21
0 0
0 1
0 2
0 3
0 4
0 5
0 6
0 7
0 8
0 9
0 10
0 11
0 12
0 13
0 14
0 15
0 16
0 17
0 18
0 19
0 20

result:

ok 22 lines

Test #6:

score: 0
Accepted
time: 1ms
memory: 3624kb

input:

20
LRUDDULRUDRLLRDURLUD

output:

22
-2 0
-2 1
-1 -2
-1 -1
-1 0
-1 1
-1 2
0 -2
0 -1
0 0
0 1
0 2
1 -2
1 -1
1 0
1 1
1 2
2 -2
2 -1
2 0
2 1
2 2

result:

ok 23 lines

Test #7:

score: 0
Accepted
time: 0ms
memory: 3576kb

input:

20
UUDUDUUDUDUDUDUDLLRL

output:

12
-2 -1
-2 0
-2 1
-2 2
-1 -1
-1 0
-1 1
-1 2
0 -1
0 0
0 1
0 2

result:

ok 13 lines

Test #8:

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

input:

20
DUUDDUDUUDUDDUUDUDDU

output:

3
0 -1
0 0
0 1

result:

ok 4 lines

Test #9:

score: 0
Accepted
time: 1ms
memory: 3652kb

input:

20
RUDLUULDRURLDURLDURR

output:

29
-3 3
-3 4
-2 2
-2 3
-2 4
-1 1
-1 2
-1 3
-1 4
0 -1
0 0
0 1
0 2
0 3
0 4
1 -1
1 0
1 1
1 2
1 3
2 -1
2 0
2 1
2 2
2 3
3 -1
3 0
3 1
3 2

result:

ok 30 lines

Test #10:

score: 0
Accepted
time: 4ms
memory: 3564kb

input:

20
DLDLDLDLLLDLLDLDLDLR

output:

108
-10 -8
-10 -7
-10 -6
-10 -5
-10 -4
-10 -3
-10 -2
-10 -1
-10 0
-9 -8
-9 -7
-9 -6
-9 -5
-9 -4
-9 -3
-9 -2
-9 -1
-9 0
-8 -8
-8 -7
-8 -6
-8 -5
-8 -4
-8 -3
-8 -2
-8 -1
-8 0
-7 -8
-7 -7
-7 -6
-7 -5
-7 -4
-7 -3
-7 -2
-7 -1
-7 0
-6 -8
-6 -7
-6 -6
-6 -5
-6 -4
-6 -3
-6 -2
-6 -1
-6 0
-5 -8
-5 -7
-5 -6
-5 -...

result:

ok 109 lines

Extra Test:

score: 0
Extra Test Passed