oj.uz

Submission #345360

# Submission time Handle Problem Language Result Execution time Memory
345360 2021-01-07T07:59:13 Z vonatlus Marriage questions (IZhO14_marriage) C++17
38 / 100
 1500 ms 4204 KB 
/// wa 

#pragma GCC optimize("O3")
//#pragma comment(linker, "/STACK:36777216")

#include<bits/stdc++.h>

#define x first
#define y second
#define pb push_back
#define sz(x) (int) x.size()
#define all(z) (z).begin(), (z).end()
 
using namespace std;

using ll = long long;
using pii = pair<int, int>;                                   

const int MOD = 1e9 + 7; 
const int INF = 1e9 + 1e2;
  
//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

void fin() {
#ifdef AM
    freopen(".in", "r", stdin);
#endif        
}                   

const bool flag = 0;

const int N = 5e4+10;

int was[N];

int mt[N], p[N], tmp;

vector<int> adj[N], g[N];
                     
bool dfs(int x) {
    if (was[x] == tmp) return 0;
    was[x] = tmp;
    for (int to : adj[x]) {
        if (mt[to] == -1) {
            mt[to] = x;
            p[x] = to;
            return 1;
        }
    }
    for (int to : adj[x]) {
        if (dfs(to)) {
            mt[to] = x;
            p[x] = to;
            return 1;
        }
    }
    return 0;
}

int n, m, k;

bool check(int l, int r) {
    for (int i = l; i <= r; ++i) {
        for (int to : g[i]) {
            adj[to].pb(i);
        }
    }
    fill(p, p+m, -1);
    for (int i = 0; i < m; ++i) {
        tmp++;
        dfs(i);
    }
    int ok = 1;
    for (int i = 0; i < m; ++i) {
        if (~p[i]) {
            mt[p[i]] = -1;
        } else {          
            ok = 0;
        }
    }
    for (int i = l; i <= r; ++i) {
        for (int to : g[i]) {
            adj[to].pop_back();
        }
    }
    return ok;
}

void ma1n() {
    cin >> n >> m >> k;
    for (int u, v; k--;) {
        cin >> u >> v;
        u--, v--;
        g[u].pb(v);
    }
    int r = 0;
    ll ans = 0;
    memset(mt, -1, sizeof(mt));
    for (int l = 0; l < n; ++l) {
        while (r < n && !check(l, r)) {
            r++;
        }        
        if (check(l, r)) {
            ans += n-r;
        }
    }
    cout << ans;
} 

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(nullptr), fin();
    int ts = 1;
    if (flag) {
        cin >> ts;
    }
    while (ts--) {
        ma1n(); 
    }
    return 0;
}

Subtask #1
38.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 2924 KB Output isn't correct
2 Incorrect 3 ms 2924 KB Output isn't correct
3 Incorrect 3 ms 2924 KB Output isn't correct
4 Incorrect 2 ms 2924 KB Output isn't correct
5 Correct 2 ms 2924 KB Output is correct
6 Correct 3 ms 2924 KB Output is correct
7 Incorrect 2 ms 2924 KB Output isn't correct
8 Correct 3 ms 2924 KB Output is correct
9 Correct 3 ms 2924 KB Output is correct
10 Correct 3 ms 2924 KB Output is correct
11 Correct 3 ms 2924 KB Output is correct
12 Correct 3 ms 2924 KB Output is correct
13 Correct 2 ms 2924 KB Output is correct
14 Incorrect 3 ms 2924 KB Output isn't correct
15 Incorrect 3 ms 2928 KB Output isn't correct
16 Incorrect 2 ms 2924 KB Output isn't correct
17 Correct 4 ms 2924 KB Output is correct
18 Correct 3 ms 2924 KB Output is correct
19 Incorrect 17 ms 2924 KB Output isn't correct
20 Incorrect 10 ms 2924 KB Output isn't correct
21 Correct 3 ms 2924 KB Output is correct
22 Incorrect 2 ms 2924 KB Output isn't correct
23 Correct 4 ms 2924 KB Output is correct
24 Correct 5 ms 2924 KB Output is correct
25 Execution timed out 1572 ms 3100 KB Time limit exceeded
26 Incorrect 263 ms 3052 KB Output isn't correct
27 Correct 9 ms 2924 KB Output is correct
28 Incorrect 6 ms 2924 KB Output isn't correct
29 Correct 69 ms 3052 KB Output is correct
30 Correct 24 ms 3052 KB Output is correct
31 Execution timed out 1590 ms 3380 KB Time limit exceeded
32 Execution timed out 1584 ms 3132 KB Time limit exceeded
33 Correct 28 ms 2924 KB Output is correct
34 Incorrect 28 ms 2924 KB Output isn't correct
35 Correct 1217 ms 4016 KB Output is correct
36 Correct 927 ms 4204 KB Output is correct
37 Execution timed out 1565 ms 3356 KB Time limit exceeded
38 Execution timed out 1598 ms 4180 KB Time limit exceeded
39 Incorrect 826 ms 3180 KB Output isn't correct
40 Execution timed out 1553 ms 3236 KB Time limit exceeded
41 Execution timed out 1580 ms 3292 KB Time limit exceeded
42 Execution timed out 1556 ms 3364 KB Time limit exceeded
43 Execution timed out 1570 ms 3680 KB Time limit exceeded
44 Execution timed out 1565 ms 3928 KB Time limit exceeded
45 Execution timed out 1548 ms 3732 KB Time limit exceeded
46 Execution timed out 1562 ms 4128 KB Time limit exceeded
47 Execution timed out 1577 ms 4188 KB Time limit exceeded
48 Execution timed out 1571 ms 4048 KB Time limit exceeded
49 Execution timed out 1584 ms 4108 KB Time limit exceeded
50 Execution timed out 1579 ms 3028 KB Time limit exceeded