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QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #214073 | #6723. Grid with Arrows | yujie3# | WA | 139ms | 13240kb | C++20 | 1.6kb | 2023-10-14 17:06:16 | 2023-10-14 17:06:16 |
Judging History
answer
#include<bits/stdc++.h>
#define endl '\n'
#define fast() ios::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr)
#define _ int _T; cin >> _T; while(_T --)
#define int long long
using namespace std;
const int N = 1e5 + 10;
const int MAX = 1e3 + 10;
int n,m;
string s[N];
vector<int> g[N];
int r[N];
bool st[MAX];
void bfs(){
queue<int> q;
for(int i = 1;i <= n * m;i ++){
if(!r[i]){
q.push(i);
break;
}
} if(!q.size()) q.push(1);
int ans = 0;
while(q.size()){
int t = q.front();
q.pop();
if(st[t]) continue;
st[t] = true;
// cout << t << "TTT" << endl;
ans ++;
for(auto x : g[t]){
r[x] --;
q.push(x);
}
}// cout << ans << endl;
if(ans != n * m) cout << "NO" << endl;
else cout << "YES" << endl;
}
void solve(){
int pos = 1;
cin >> n >> m;
for(int i = 1;i <= n * m;i ++){
st[i] = false;
g[i].clear();
}
for(int i = 1;i <= n;i ++){
cin >> s[i];
}
for(int i = 1;i <= n;i ++){
for(int j = 0;j < m;j ++){
int a; cin >> a;
if(s[i][j] == 'r' && j + 1 + a <= m){
g[pos].push_back(pos + a);
r[pos + a] ++;
}
if(s[i][j] == 'l' && j + 1 - a >= 1){
g[pos].push_back(pos - a);
r[pos - a] ++;
}
if(s[i][j] == 'u' && i - a >= 1){
g[pos].push_back(pos - a * m);
r[pos - a * m] ++;
}
if(s[i][j] == 'd'){
g[pos].push_back(pos + a * m);
r[pos + a * m] ++;
}
pos ++;
}
}
bfs();
// for(int i = 1;i <= n * m;i ++){
// for(auto t : g[i]){
// cout << t << " " << r[t] ;
// } cout << endl;
// }
}
signed main(){
// fast();
_
solve();
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 8984kb
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: 139ms
memory: 13240kb
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 NO NO NO NO NO NO NO NO NO YES NO NO NO NO YES YES YES NO YES NO NO NO YES YES NO YES NO YES NO YES NO NO NO YES NO YES YES YES YES NO YES YES NO YES YES NO NO NO YES NO NO YES YES NO NO YES YES YES YES YES NO YES...
result:
wrong answer expected YES, found NO [26th token]