oj.uz

Submission #700931

# Submission time Handle Problem Language Result Execution time Memory
700931 2023-02-19T12:46:04 Z KiriLL1ca Marriage questions (IZhO14_marriage) C++17
88 / 100
 1242 ms 4820 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)
#define int long long

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 = 1e5 + 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)) ans += n - r;

        random_shuffle(all(girls));

        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 3412 KB Output is correct
2 Correct 2 ms 3412 KB Output is correct
3 Correct 3 ms 3412 KB Output is correct
4 Correct 2 ms 3412 KB Output is correct
5 Correct 3 ms 3412 KB Output is correct
6 Correct 2 ms 3412 KB Output is correct
7 Correct 2 ms 3412 KB Output is correct
8 Correct 2 ms 3412 KB Output is correct
9 Correct 3 ms 3412 KB Output is correct
10 Correct 2 ms 3412 KB Output is correct
11 Correct 2 ms 3412 KB Output is correct
12 Correct 2 ms 3412 KB Output is correct
13 Incorrect 2 ms 3412 KB Output isn't correct
14 Correct 2 ms 3412 KB Output is correct
15 Incorrect 2 ms 3412 KB Output isn't correct
16 Correct 2 ms 3412 KB Output is correct
17 Correct 2 ms 3412 KB Output is correct
18 Correct 2 ms 3412 KB Output is correct
19 Correct 5 ms 3412 KB Output is correct
20 Correct 3 ms 3412 KB Output is correct
21 Correct 2 ms 3412 KB Output is correct
22 Correct 2 ms 3412 KB Output is correct
23 Correct 2 ms 3412 KB Output is correct
24 Correct 2 ms 3540 KB Output is correct
25 Correct 44 ms 3664 KB Output is correct
26 Correct 6 ms 3412 KB Output is correct
27 Correct 3 ms 3412 KB Output is correct
28 Correct 3 ms 3456 KB Output is correct
29 Correct 4 ms 3540 KB Output is correct
30 Correct 3 ms 3540 KB Output is correct
31 Correct 495 ms 4176 KB Output is correct
32 Correct 8 ms 3540 KB Output is correct
33 Correct 11 ms 3496 KB Output is correct
34 Correct 8 ms 3412 KB Output is correct
35 Correct 108 ms 4484 KB Output is correct
36 Correct 76 ms 4436 KB Output is correct
37 Correct 1242 ms 4224 KB Output is correct
38 Correct 47 ms 4436 KB Output is correct
39 Correct 203 ms 3540 KB Output is correct
40 Correct 323 ms 3728 KB Output is correct
41 Incorrect 115 ms 3880 KB Output isn't correct
42 Correct 140 ms 3852 KB Output is correct
43 Correct 143 ms 4104 KB Output is correct
44 Correct 290 ms 4640 KB Output is correct
45 Incorrect 165 ms 4172 KB Output isn't correct
46 Incorrect 19 ms 4820 KB Output isn't correct
47 Correct 545 ms 4768 KB Output is correct
48 Correct 567 ms 4764 KB Output is correct
49 Incorrect 21 ms 4816 KB Output isn't correct
50 Correct 638 ms 3908 KB Output is correct