oj.uz

Submission #700930

# Submission time Handle Problem Language Result Execution time Memory
700930 2023-02-19T12:45:16 Z KiriLL1ca Marriage questions (IZhO14_marriage) C++17
88 / 100
 1187 ms 1876 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)) 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 1 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 1108 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 1108 KB Output is correct
8 Correct 1 ms 1108 KB Output is correct
9 Correct 1 ms 1108 KB Output is correct
10 Correct 1 ms 1108 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 1108 KB Output is correct
20 Correct 1 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 1 ms 1108 KB Output is correct
25 Correct 43 ms 1236 KB Output is correct
26 Correct 5 ms 1236 KB Output is correct
27 Correct 2 ms 1236 KB Output is correct
28 Correct 1 ms 1108 KB Output is correct
29 Correct 3 ms 1252 KB Output is correct
30 Correct 2 ms 1236 KB Output is correct
31 Correct 466 ms 1616 KB Output is correct
32 Correct 6 ms 1268 KB Output is correct
33 Correct 9 ms 1228 KB Output is correct
34 Correct 6 ms 1236 KB Output is correct
35 Correct 102 ms 1712 KB Output is correct
36 Correct 71 ms 1620 KB Output is correct
37 Correct 1187 ms 1540 KB Output is correct
38 Correct 42 ms 1724 KB Output is correct
39 Correct 205 ms 1344 KB Output is correct
40 Correct 317 ms 1344 KB Output is correct
41 Incorrect 117 ms 1364 KB Output isn't correct
42 Correct 140 ms 1396 KB Output is correct
43 Correct 143 ms 1524 KB Output is correct
44 Correct 301 ms 1804 KB Output is correct
45 Incorrect 160 ms 1552 KB Output isn't correct
46 Incorrect 18 ms 1876 KB Output isn't correct
47 Correct 535 ms 1856 KB Output is correct
48 Correct 532 ms 1868 KB Output is correct
49 Incorrect 21 ms 1876 KB Output isn't correct
50 Correct 618 ms 1396 KB Output is correct