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 |
---|---|---|---|---|---|---|---|---|---|
#578270 | #7516. Robot Experiment | LittleYoo# | AC ✓ | 4ms | 3652kb | C++20 | 1.0kb | 2024-09-20 17:53:18 | 2024-09-20 17:53:19 |
Judging History
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?
詳細信息
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