oj.uz

Submission #90673

# Submission time Handle Problem Language Result Execution time Memory
90673 2018-12-23T12:53:45 Z popovicirobert Marriage questions (IZhO14_marriage) C++14
14 / 100
 1022 ms 9952 KB 
#include <bits/stdc++.h>
#define lsb(x) (x & (-x))
#define ll long long
#define ull unsigned long long
#define ld long double
// 217
// 44

using namespace std;

const int MAXN = 30000;

struct Match {
    vector < vector <int> > g;
    vector <int> vis, l, r;
    map < pair <int, int>, int > mp;
    int n, now;
    int ans;
    inline void init(int _n) {
        n = _n;
        g.resize(n + 1);
        l.resize(n + 1);
        r.resize(n + 1);
        vis.resize(n + 1);
        ans = now = 0;
    }
    inline void addEdge(int x, int y) {
        g[x].push_back(y);
    }
    inline void delEdge(int x, int y) {
        mp[{x, y}] = 1;
    }
    bool match(int nod) {
        for(auto it : g[nod]) {
            if(r[it] == 0 && mp[{nod, it}] == 0) {
                l[nod] = it;
                r[it] = nod;
                return 1;
            }
        }
        vis[nod] = now;
        for(auto it : g[nod]) {
            if(mp[{nod, it}] == 0 && vis[r[it]] != now && match(r[it])) {
                l[nod] = it;
                r[it] = nod;
                return 1;
            }
        }
        return 0;
    }
    inline int solve(int m) {
        bool flag = 1;
        int i;
        while(flag) {
            flag = 0;
            for(i = 1; i <= m; i++) {
                if(l[i] == 0) {
                    flag |= match(i);
                }
            }
        }
        for(i = 1; i <= m; i++) {
            ans += (l[i] > 0);
        }
        return ans;
    }
}M;

vector <int> g[MAXN + 1];

int main() {
    //ifstream cin("A.in");
    //ofstream cout("A.out");
    int i, n, m, k;
    ios::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);
    cin >> n >> m >> k;
    for(i = 1; i <= k; i++) {
        int a, b;
        cin >> a >> b;
        g[a].push_back(b);
    }
    Match M;
    M.init(n + m);
    int pos = 1;
    ll ans = 0;
    for(i = 1; i <= n; i++) {
        bool ok = 0;
        while(M.solve(m) < m && pos <= n) {
            for(auto it : g[pos]) {
                M.addEdge(it, pos + m);
            }
            pos++;
            ok = 1;
        }
        pos -= ok;
        if(M.ans == m) {
            ans += n - pos + 1;
        }
        for(auto it : g[i]) {
            M.delEdge(it, i + m);
        }
    }
    cout << ans;
    //cin.close();
    //cout.close();
    return 0;
}

Subtask #1
14.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 1016 KB Output isn't correct
2 Incorrect 2 ms 1168 KB Output isn't correct
3 Incorrect 2 ms 1168 KB Output isn't correct
4 Incorrect 2 ms 1180 KB Output isn't correct
5 Incorrect 2 ms 1180 KB Output isn't correct
6 Incorrect 2 ms 1180 KB Output isn't correct
7 Incorrect 2 ms 1284 KB Output isn't correct
8 Correct 3 ms 1284 KB Output is correct
9 Correct 2 ms 1360 KB Output is correct
10 Correct 2 ms 1360 KB Output is correct
11 Correct 2 ms 1360 KB Output is correct
12 Incorrect 2 ms 1360 KB Output isn't correct
13 Incorrect 2 ms 1360 KB Output isn't correct
14 Incorrect 2 ms 1360 KB Output isn't correct
15 Incorrect 2 ms 1360 KB Output isn't correct
16 Incorrect 2 ms 1360 KB Output isn't correct
17 Incorrect 2 ms 1360 KB Output isn't correct
18 Incorrect 3 ms 1360 KB Output isn't correct
19 Incorrect 4 ms 1376 KB Output isn't correct
20 Incorrect 3 ms 1376 KB Output isn't correct
21 Correct 2 ms 1376 KB Output is correct
22 Incorrect 2 ms 1376 KB Output isn't correct
23 Incorrect 3 ms 1376 KB Output isn't correct
24 Incorrect 3 ms 1376 KB Output isn't correct
25 Incorrect 20 ms 2092 KB Output isn't correct
26 Incorrect 4 ms 2092 KB Output isn't correct
27 Incorrect 3 ms 2092 KB Output isn't correct
28 Incorrect 3 ms 2092 KB Output isn't correct
29 Incorrect 6 ms 2092 KB Output isn't correct
30 Incorrect 5 ms 2092 KB Output isn't correct
31 Incorrect 255 ms 4820 KB Output isn't correct
32 Incorrect 10 ms 4820 KB Output isn't correct
33 Correct 5 ms 4820 KB Output is correct
34 Incorrect 5 ms 4820 KB Output isn't correct
35 Incorrect 56 ms 8164 KB Output isn't correct
36 Incorrect 42 ms 8164 KB Output isn't correct
37 Incorrect 408 ms 8164 KB Output isn't correct
38 Incorrect 60 ms 8444 KB Output isn't correct
39 Incorrect 89 ms 8444 KB Output isn't correct
40 Correct 100 ms 8444 KB Output is correct
41 Incorrect 148 ms 8444 KB Output isn't correct
42 Incorrect 64 ms 8444 KB Output isn't correct
43 Incorrect 72 ms 8444 KB Output isn't correct
44 Incorrect 144 ms 8444 KB Output isn't correct
45 Incorrect 290 ms 8444 KB Output isn't correct
46 Incorrect 889 ms 9204 KB Output isn't correct
47 Incorrect 240 ms 9568 KB Output isn't correct
48 Incorrect 232 ms 9568 KB Output isn't correct
49 Incorrect 1022 ms 9952 KB Output isn't correct
50 Incorrect 282 ms 9952 KB Output isn't correct