#include <bits/stdc++.h>
using namespace std;
#define int long long
const int N = 1e5 + 10;
int n, m, k;
vector<int> g[N];
int mt[N];
bool mark[N];
bool dfs(int u) {
if(mark[u]) return false;
mark[u] = true;
for(int v : g[u]) {
if(mt[v] == -1 || dfs(mt[v])) {
mt[v] = u;
return true;
}
}
return false;
}
int max_matching(int l, int r) {
for(int i = 1; i <= m; i++) mt[i] = -1;
int ans = 0;
for(int i = l; i <= r; i++) {
for(int j = l; j <= r; j++) mark[j] = false;
dfs(i);
}
for(int i = 1; i <= m; i++) if(mt[i] != -1) ans++;
return ans;
}
signed main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
cin >> n >> m >> k;
for(int i = 1; i <= k; i++) {
int u, v;
cin >> u >> v;
g[u].push_back(v);
}
int ans = 0;
for(int l = 1; l <= n; l++) for(int r = l + m - 1; r <= n; r++) if(max_matching(l, r) == m) ans++;
cout << ans;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 2 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 3 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 4 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 5 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 6 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 7 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 8 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 9 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 10 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 11 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 12 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 13 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 14 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 15 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 16 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 17 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 18 |
Correct |
1 ms |
3420 KB |
Output is correct |
| 19 |
Correct |
38 ms |
3420 KB |
Output is correct |
| 20 |
Correct |
14 ms |
3420 KB |
Output is correct |
| 21 |
Correct |
2 ms |
3420 KB |
Output is correct |
| 22 |
Correct |
9 ms |
3420 KB |
Output is correct |
| 23 |
Correct |
20 ms |
3420 KB |
Output is correct |
| 24 |
Correct |
14 ms |
3420 KB |
Output is correct |
| 25 |
Execution timed out |
1599 ms |
3676 KB |
Time limit exceeded |
| 26 |
Execution timed out |
1535 ms |
3416 KB |
Time limit exceeded |
| 27 |
Correct |
303 ms |
3420 KB |
Output is correct |
| 28 |
Execution timed out |
1523 ms |
3416 KB |
Time limit exceeded |
| 29 |
Execution timed out |
1535 ms |
3416 KB |
Time limit exceeded |
| 30 |
Execution timed out |
1564 ms |
3420 KB |
Time limit exceeded |
| 31 |
Execution timed out |
1570 ms |
3932 KB |
Time limit exceeded |
| 32 |
Execution timed out |
1544 ms |
3416 KB |
Time limit exceeded |
| 33 |
Correct |
1370 ms |
3420 KB |
Output is correct |
| 34 |
Execution timed out |
1580 ms |
3420 KB |
Time limit exceeded |
| 35 |
Execution timed out |
1558 ms |
4444 KB |
Time limit exceeded |
| 36 |
Execution timed out |
1559 ms |
4444 KB |
Time limit exceeded |
| 37 |
Execution timed out |
1542 ms |
4184 KB |
Time limit exceeded |
| 38 |
Execution timed out |
1576 ms |
4956 KB |
Time limit exceeded |
| 39 |
Execution timed out |
1522 ms |
3416 KB |
Time limit exceeded |
| 40 |
Execution timed out |
1535 ms |
3672 KB |
Time limit exceeded |
| 41 |
Execution timed out |
1560 ms |
3676 KB |
Time limit exceeded |
| 42 |
Execution timed out |
1566 ms |
3932 KB |
Time limit exceeded |
| 43 |
Execution timed out |
1539 ms |
4156 KB |
Time limit exceeded |
| 44 |
Execution timed out |
1583 ms |
4440 KB |
Time limit exceeded |
| 45 |
Execution timed out |
1555 ms |
4144 KB |
Time limit exceeded |
| 46 |
Execution timed out |
1537 ms |
4956 KB |
Time limit exceeded |
| 47 |
Execution timed out |
1534 ms |
4944 KB |
Time limit exceeded |
| 48 |
Execution timed out |
1540 ms |
4696 KB |
Time limit exceeded |
| 49 |
Execution timed out |
1552 ms |
4988 KB |
Time limit exceeded |
| 50 |
Execution timed out |
1561 ms |
3420 KB |
Time limit exceeded |
