#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define fi first
#define se second
#define ll long long
#define ld long double
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define mpp make_pair
#define ve vector
using namespace std;
using namespace __gnu_pbds;
template<class T> using oset = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;
const ll inf = 1e18; const int iinf = 1e9;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
template <typename T> inline bool chmin(T& a, T b) { return (a > b ? a = b, 1 : 0); }
template <typename T> inline bool chmax(T& a, T b) { return (a < b ? a = b, 1 : 0); }
int timer = 1;
const int N = 3e4 + 10;
const int M = 2e3 + 10;
ve<int> gr[N + M];
bool can[N]; int used[N], mt[N];
inline bool kuhn(int v) {
if (used[v] == timer) return 0;
used[v] = timer;
for (int &to : gr[v]) if (can[to] && mt[to] == -1) { mt[to] = v, mt[v] = to; return 1; }
for (int &to : gr[v]) if (can[to] && kuhn(mt[to])) { mt[to] = v, mt[v] = to; return 1; }
return 0;
}
int un[N];
int ptr = 0;
int sz = 0;
inline void run() {
while (ptr) {
++timer;
bool ok = kuhn(un[ptr - 1]);
if (!ok) break;
else --ptr, ++sz;
}
}
inline void solve() {
int n, m, k;
cin >> n >> m >> k;
for (int i = 0; i < k; ++i) {
int v, u;
cin >> v >> u, --v, --u;
gr[u].pb(v + m);
}
for (int i = 0; i < n + m; ++i) mt[i] = -1;
for (int i = 0; i < m; ++i) un[ptr++] = i;
int ans = 0;
for (int l = 0, r = 0; l < n; ++l) {
while (r < n) {
can[r + m] = 1; run();
if (sz == m) break;
++r;
}
ans += n - r;
can[l + m] = 0;
if (mt[l + m] != -1) {
--sz;
mt[mt[l + m]] = -1;
un[ptr++] = mt[l + m];
mt[l + m] = -1;
}
}
cout << ans;
}
signed main() {
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
int q = 1; // cin >> q;
while (q--) solve();
cerr << fixed << setprecision(3) << "Time execution: " << (double)clock() / CLOCKS_PER_SEC << endl;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
1084 KB |
Output is correct |
| 2 |
Correct |
1 ms |
980 KB |
Output is correct |
| 3 |
Correct |
1 ms |
1080 KB |
Output is correct |
| 4 |
Correct |
1 ms |
980 KB |
Output is correct |
| 5 |
Correct |
1 ms |
980 KB |
Output is correct |
| 6 |
Correct |
1 ms |
980 KB |
Output is correct |
| 7 |
Correct |
1 ms |
980 KB |
Output is correct |
| 8 |
Correct |
1 ms |
980 KB |
Output is correct |
| 9 |
Correct |
1 ms |
980 KB |
Output is correct |
| 10 |
Correct |
1 ms |
980 KB |
Output is correct |
| 11 |
Correct |
1 ms |
980 KB |
Output is correct |
| 12 |
Correct |
1 ms |
980 KB |
Output is correct |
| 13 |
Incorrect |
1 ms |
1084 KB |
Output isn't correct |
| 14 |
Correct |
1 ms |
980 KB |
Output is correct |
| 15 |
Correct |
1 ms |
980 KB |
Output is correct |
| 16 |
Correct |
1 ms |
1080 KB |
Output is correct |
| 17 |
Correct |
1 ms |
980 KB |
Output is correct |
| 18 |
Correct |
1 ms |
980 KB |
Output is correct |
| 19 |
Correct |
4 ms |
1108 KB |
Output is correct |
| 20 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 21 |
Correct |
1 ms |
980 KB |
Output is correct |
| 22 |
Correct |
1 ms |
980 KB |
Output is correct |
| 23 |
Correct |
2 ms |
1088 KB |
Output is correct |
| 24 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 25 |
Correct |
44 ms |
1180 KB |
Output is correct |
| 26 |
Correct |
5 ms |
1108 KB |
Output is correct |
| 27 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 28 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 29 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 30 |
Correct |
2 ms |
1172 KB |
Output is correct |
| 31 |
Correct |
510 ms |
1772 KB |
Output is correct |
| 32 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 33 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 34 |
Correct |
2 ms |
1108 KB |
Output is correct |
| 35 |
Correct |
107 ms |
2368 KB |
Output is correct |
| 36 |
Correct |
78 ms |
2248 KB |
Output is correct |
| 37 |
Correct |
1274 ms |
1976 KB |
Output is correct |
| 38 |
Correct |
17 ms |
2412 KB |
Output is correct |
| 39 |
Correct |
56 ms |
1276 KB |
Output is correct |
| 40 |
Correct |
3 ms |
1348 KB |
Output is correct |
| 41 |
Correct |
5 ms |
1492 KB |
Output is correct |
| 42 |
Correct |
7 ms |
1540 KB |
Output is correct |
| 43 |
Correct |
11 ms |
1876 KB |
Output is correct |
| 44 |
Correct |
16 ms |
2500 KB |
Output is correct |
| 45 |
Runtime error |
9 ms |
3028 KB |
Execution killed with signal 11 |
| 46 |
Runtime error |
21 ms |
4448 KB |
Execution killed with signal 11 |
| 47 |
Runtime error |
22 ms |
4300 KB |
Execution killed with signal 11 |
| 48 |
Runtime error |
23 ms |
4200 KB |
Execution killed with signal 11 |
| 49 |
Runtime error |
22 ms |
4672 KB |
Execution killed with signal 11 |
| 50 |
Runtime error |
145 ms |
2508 KB |
Execution killed with signal 11 |
