QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #665222 | #6723. Grid with Arrows | jiangtao | WA | 72ms | 12884kb | C++20 | 1.9kb | 2024-10-22 10:04:31 | 2024-10-22 10:04:32 |
Judging History
answer
// Problem: B. Grid with Arrows
// Contest: Codeforces - The 2019 ICPC China Shaanxi Provincial Programming Contest
// URL: https://codeforces.com/gym/104460/problem/B
// Memory Limit: 256 MB
// Time Limit: 2000 ms
// Begin:2024-10-21 20:25:36
//
// Powered by CP Editor (https://cpeditor.org)
#include <bits/stdc++.h>
using namespace std;
#define int long long
const int N = 2e5 + 5, M = 1e9 + 7, mod = 998244353;
#define YES {cout << "Yes" << endl; return ;}
#define NO {cout << "No" << endl; return ;}
char c[N];
int a[N];
int dp[N];
bool f[N];
int n, m;
bool ok = false;
void dfs(int x, int y, int rootx, int rooty, int cnt = 1){
if (f[x * m + y]) return ;
f[x * m + y] = true;
dp[x * m + y] = 1;
int xx = x, yy = y;
if (c[x * m + y] == 'u'){
xx -= a[x * m + y];
}else if (c[x * m + y] == 'd'){
xx += a[x * m + y];
}else if (c[x * m + y] == 'l'){
yy -= a[x * m + y];
}else if (c[x * m + y] == 'r'){
yy += a[x * m + y];
}
if (xx < 0 || xx >= n || yy < 0 || yy >= m) return ;
if (xx == rootx && yy == rooty) ok = true;
else dfs(xx, yy, rootx, rooty, cnt + 1);
if (ok){//形成环
dp[x * m + y] = max(cnt, dp[xx * m + yy]);
}else{
dp[x * m + y] = dp[xx * m + yy] + 1;
}
// cout << x << " " << y << " " << dp[x * m + y] << "\n";
return ;
}
void solve(){
cin >> n >> m;
for (int i = 0; i < n; i++){
for (int j = 0; j < m; j++){
cin >> c[i * m + j];
f[i * m + j] = 0;
dp[i * m + j] = 0;
}
}
for (int i = 0; i < n; i++){
for (int j = 0; j < m; j++){
cin >> a[i * m + j];
}
}
for (int i = 0; i < n; i++){
for (int j = 0; j < m; j++){
ok = false;
dfs(i, j, i, j);
if (dp[i * m + j] == n * m) YES
}
}
NO
}
signed main(){
ios::sync_with_stdio(false);
cin.tie(nullptr);
int ___ = 1;
cin >> ___;
while (___--)
solve();
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 5684kb
input:
2 2 3 rdd url 2 1 1 1 1 2 2 2 rr rr 1 1 1 1
output:
Yes No
result:
ok 2 token(s): yes count is 1, no count is 1
Test #2:
score: -100
Wrong Answer
time: 72ms
memory: 12884kb
input:
1109 5 8 rddddldl drruludl rrldrurd urrrlluu uurrulrl 4 4 1 2 4 3 1 6 1 3 5 1 1 1 3 6 2 4 1 1 2 1 1 1 2 3 4 2 4 3 3 3 4 1 1 2 2 5 1 5 7 9 rdrddrdll urrdruldl ruullrulu drrlrlddl rrrdddlll ruulururl ruurrlluu 7 1 1 1 2 1 2 3 6 1 7 3 1 3 1 2 1 8 2 2 1 2 4 3 1 2 2 2 2 4 1 1 5 3 3 1 3 4 6 1 2 1 2 7 7 6 ...
output:
Yes No No No Yes No Yes Yes Yes Yes No No No Yes Yes No Yes No Yes No No No Yes Yes No Yes Yes No Yes No No Yes No No Yes Yes Yes No No Yes Yes Yes No Yes No Yes No Yes Yes No Yes No Yes No Yes Yes No No Yes No Yes Yes Yes Yes No Yes Yes No Yes Yes No No Yes Yes No No Yes Yes No No Yes Yes Yes Yes Y...
result:
wrong answer expected NO, found YES [735th token]