QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #788316 | #9788. Shreckless | ucup-team3519# | WA | 14ms | 3856kb | C++17 | 1.1kb | 2024-11-27 16:32:05 | 2024-11-27 16:32:06 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define V vector
#define pb push_back
#define fi first
#define se second
#define all0(x) (x).begin(), (x).end()
#define all1(x) (x).begin() + 1, (x).end()
typedef long long LL;
typedef pair<int, int> pi;
void solve(){
int n, m; cin >> n >> m;
V<int> bad(n);
V<V<int>> a(m + 1, V<int>(n));
for(int i = 0; i < n; i++) for(int j = 1; j <= m; j++) cin >> a[j][i];
for(int i = 1; i <= m; i++) sort(all0(a[i]));
bad = a[1];
for(int i = 2; i <= m; i++) {
int l = 0, r = bad.size() + 1;
while(l != r - 1) {
int mid = l + r >> 1;
bool ok = 1;
int st = bad.size() - mid;
for(int j = 0; j < mid; j++) {
ok &= a[i][j] < bad[st + j];
}
if(ok) l = mid;
else r = mid;
}
reverse(all0(bad));
for(int i = 1; i <= l; i++) bad.pop_back();
reverse(all0(bad));
}
cout << (bad.size() == 0 ? "YES" : "NO") << "\n";
}
int main(){
ios::sync_with_stdio(0),cin.tie(0);
int t; cin >> t;
while(t--)
solve();
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3620kb
input:
3 2 2 69 69 2024 42 3 3 1 1 1 1 1 1 2 2 2 3 4 1 1 1 1 1 1 1 1 2 2 2 2
output:
YES NO YES
result:
ok 3 token(s): yes count is 2, no count is 1
Test #2:
score: 0
Accepted
time: 0ms
memory: 3564kb
input:
3 2 2 69 69 2024 42 3 3 1 1 1 1 1 1 2 2 2 3 4 1 1 1 1 1 1 1 1 2 2 2 2
output:
YES NO YES
result:
ok 3 token(s): yes count is 2, no count is 1
Test #3:
score: -100
Wrong Answer
time: 14ms
memory: 3856kb
input:
20000 6 2 12 4 8 24 2 10 1 22 3 15 18 20 3 3 3 8 18 2 17 15 13 4 6 3 3 7 17 15 8 6 3 18 13 9 3 3 2 3 14 1 7 17 4 6 13 3 3 6 10 14 3 9 13 1 7 15 2 4 1 3 16 14 6 10 4 2 3 3 3 2 17 7 11 13 16 5 18 2 3 2 3 6 4 1 5 2 4 4 6 13 14 2 11 12 16 3 3 2 8 12 4 9 17 5 7 18 3 2 5 10 8 9 1 6 2 2 2 4 1 3 2 3 12 6 1 ...
output:
NO NO YES NO NO YES YES YES NO NO NO NO YES YES YES YES NO NO YES NO NO NO YES NO YES YES YES YES NO NO NO NO NO YES NO NO NO NO NO YES NO NO YES NO NO NO NO YES NO NO NO NO NO YES NO YES NO NO YES YES NO NO YES NO NO NO NO YES YES YES NO NO NO NO NO NO NO NO YES YES YES NO NO YES YES NO NO NO NO NO...
result:
wrong answer expected YES, found NO [2nd token]