oj.uz

Submission #700928

# Submission time Handle Problem Language Result Execution time Memory
700928 2023-02-19T12:41:55 Z KiriLL1ca Marriage questions (IZhO14_marriage) C++17
88 / 100
 1259 ms 2644 KB 
#include <bits/stdc++.h>
#define fr first
#define sc second
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define endl '\n'
#define sz(x) (int)((x).size())
#define vec vector
#define pw(x) (1ll << x)

using namespace std;

template <typename T> inline bool umin (T &a, const T &b) { if (a > b) { a = b; return 1; } return 0; }
template <typename T> inline bool umax (T &a, const T &b) { if (a < b) { a = b; return 1; } return 0; }

typedef long double ld;
typedef long long ll;
typedef unsigned long long ull;
typedef pair <int, int> pii;

const int N = 3e4 + 2e3 + 10;
vec <int> g[N];
int used[N], mt[N], active[N], us = 0;

inline bool kuhn (int v) {
    if (used[v] == us) return 0;
    used[v] = us;
    for (auto &u : g[v]) if (active[u] && !~mt[u]) { mt[u] = v; return 1; }
    for (auto &u : g[v]) if (active[u] && kuhn(mt[u])) { mt[u] = v; return 1; }
    return 0;
}

inline void solve () {
    int n, m, k; cin >> n >> m >> k;
    for (int i = 0; i < k; ++i) {
        int u, v; cin >> u >> v; --u, --v;
        g[v].pb(u);
    }

    fill(mt, mt + N, -1);
    vec <int> girls;
    for (int i = 0; i < m; ++i) girls.pb(i);

    ll ans = 0;
    for (int l = 0, r = 0; l < n; ++l) {
        while (r < n) {
            active[r] = 1;
            while (sz(girls)) {
                ++us;
                int go = girls.back();
                if (kuhn(go)) girls.pop_back();
                else break;
            }
            if (!sz(girls)) break;
            ++r;
        }

        if (sz(girls)) continue;

        ans += n - r;
        if (~mt[l]) {
            girls.pb(mt[l]);
            mt[l] = -1;
            active[l] = 0;
        }
    }
    cout << ans << endl;
}

signed main () {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    #ifdef LOCAL
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif// LOCAL
    int t = 1; //cin >> t;
    while (t--) solve();
    return 0;
}

Subtask #1
88.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1108 KB Output is correct
2 Correct 1 ms 1108 KB Output is correct
3 Correct 1 ms 1108 KB Output is correct
4 Correct 1 ms 1208 KB Output is correct
5 Correct 1 ms 1108 KB Output is correct
6 Correct 1 ms 1108 KB Output is correct
7 Correct 1 ms 1204 KB Output is correct
8 Correct 1 ms 1212 KB Output is correct
9 Correct 1 ms 1108 KB Output is correct
10 Correct 1 ms 1212 KB Output is correct
11 Correct 1 ms 1108 KB Output is correct
12 Correct 1 ms 1108 KB Output is correct
13 Incorrect 1 ms 1108 KB Output isn't correct
14 Correct 1 ms 1108 KB Output is correct
15 Incorrect 1 ms 1108 KB Output isn't correct
16 Correct 1 ms 1108 KB Output is correct
17 Correct 1 ms 1108 KB Output is correct
18 Correct 1 ms 1108 KB Output is correct
19 Correct 4 ms 1216 KB Output is correct
20 Correct 2 ms 1108 KB Output is correct
21 Correct 1 ms 1108 KB Output is correct
22 Correct 1 ms 1108 KB Output is correct
23 Correct 1 ms 1108 KB Output is correct
24 Correct 2 ms 1212 KB Output is correct
25 Correct 47 ms 1372 KB Output is correct
26 Correct 5 ms 1244 KB Output is correct
27 Correct 2 ms 1208 KB Output is correct
28 Correct 1 ms 1108 KB Output is correct
29 Correct 3 ms 1280 KB Output is correct
30 Correct 2 ms 1220 KB Output is correct
31 Correct 487 ms 1876 KB Output is correct
32 Correct 2 ms 1220 KB Output is correct
33 Correct 1 ms 1236 KB Output is correct
34 Correct 2 ms 1236 KB Output is correct
35 Correct 104 ms 2476 KB Output is correct
36 Correct 79 ms 2348 KB Output is correct
37 Correct 1259 ms 2128 KB Output is correct
38 Correct 16 ms 2576 KB Output is correct
39 Correct 48 ms 1348 KB Output is correct
40 Correct 3 ms 1364 KB Output is correct
41 Incorrect 5 ms 1620 KB Output isn't correct
42 Correct 7 ms 1620 KB Output is correct
43 Correct 13 ms 1820 KB Output is correct
44 Correct 16 ms 2508 KB Output is correct
45 Incorrect 7 ms 1732 KB Output isn't correct
46 Incorrect 18 ms 2548 KB Output isn't correct
47 Correct 20 ms 2508 KB Output is correct
48 Correct 21 ms 2480 KB Output is correct
49 Incorrect 20 ms 2644 KB Output isn't correct
50 Correct 160 ms 1460 KB Output is correct