oj.uz

Submission #443032

# Submission time Handle Problem Language Result Execution time Memory
443032 2021-07-09T13:58:38 Z leaked Marriage questions (IZhO14_marriage) C++14
96 / 100
 1500 ms 3164 KB 
#include <bits/stdc++.h>
//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("-O3")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define vec vector
#define sz(x) ( int)x.size()
#define m_p make_pair
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
using namespace std;
typedef long long ll;
typedef pair<ll, int> pli;
typedef pair<int,ll> pil;
typedef pair<int,int> pii;
typedef unsigned long long ull;
auto rng=bind(uniform_int_distribution<int>(1,1000),mt19937(time(0)));
template<class T> bool umax(T &a,const T &b){return (a<b?a=b,1:0);}
template<class T> bool umin(T &a,const T &b){return (a>b?a=b,1:0);}
const int N=3e4+1;
const int K=165;
const int M=2001;
vec<int> g[N+M];
int uk;
int mt[N+M];
int h[N+M],u[N+M],tt,n,m;
int tr;
bool kuhn(int v){
    if(u[v]==tt) return 0;
    u[v]=tt;
    for(auto &z : g[v]){
        if(h[z] && (mt[z]==-1 || kuhn(mt[z]))){
            mt[z]=v;mt[v]=z;
            return 1;
        }
    }
    return 0;
}
signed main(){
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    int k;
    cin>>n>>m>>k;
    for(int i=0;i<k;i++){
        int v,u;
        cin>>v>>u;--v;--u;
        g[v].pb(u+n);
        g[u+n].pb(v);
    }
    fill(mt,mt+n+m,-1);
    for(int i=0;i<m;i++) h[i+n]=1;
    int r=-1;
    int c=0;
    ll ans=0;
    for(int l=0;l<n;l++){
        if(l){
            h[l-1]=0;
            if(mt[l-1]!=-1){
                tt++;
                mt[mt[l-1]]=-1;
                c--;c+=kuhn(mt[l-1]);
                mt[l-1]=-1;
            }
        }
        while(r<n && c!=m){
            r++;tt++;
            h[r]=1;c+=kuhn(r);
        }
        ans+=n-r;
    }
    cout<<ans;
    return 0;
}

/*
5
1 2
2 3
3 4
4 5
5 1
*/

Subtask #1
96.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 1 ms 972 KB Output is correct
3 Correct 1 ms 972 KB Output is correct
4 Correct 1 ms 972 KB Output is correct
5 Correct 1 ms 972 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 972 KB Output is correct
8 Correct 1 ms 972 KB Output is correct
9 Correct 1 ms 972 KB Output is correct
10 Correct 1 ms 972 KB Output is correct
11 Correct 1 ms 972 KB Output is correct
12 Correct 1 ms 972 KB Output is correct
13 Correct 1 ms 1100 KB Output is correct
14 Correct 1 ms 972 KB Output is correct
15 Correct 1 ms 972 KB Output is correct
16 Correct 1 ms 972 KB Output is correct
17 Correct 1 ms 972 KB Output is correct
18 Correct 1 ms 972 KB Output is correct
19 Correct 3 ms 1100 KB Output is correct
20 Correct 1 ms 1100 KB Output is correct
21 Correct 1 ms 972 KB Output is correct
22 Correct 1 ms 972 KB Output is correct
23 Correct 1 ms 1100 KB Output is correct
24 Correct 1 ms 972 KB Output is correct
25 Correct 31 ms 1228 KB Output is correct
26 Correct 6 ms 1100 KB Output is correct
27 Correct 1 ms 1100 KB Output is correct
28 Correct 1 ms 972 KB Output is correct
29 Correct 8 ms 1164 KB Output is correct
30 Correct 7 ms 1100 KB Output is correct
31 Correct 354 ms 1692 KB Output is correct
32 Correct 26 ms 1100 KB Output is correct
33 Correct 1 ms 1100 KB Output is correct
34 Correct 4 ms 1100 KB Output is correct
35 Correct 203 ms 2184 KB Output is correct
36 Correct 178 ms 2140 KB Output is correct
37 Correct 941 ms 1964 KB Output is correct
38 Correct 336 ms 2520 KB Output is correct
39 Correct 42 ms 1404 KB Output is correct
40 Correct 5 ms 1484 KB Output is correct
41 Correct 97 ms 1604 KB Output is correct
42 Correct 172 ms 1816 KB Output is correct
43 Correct 223 ms 1980 KB Output is correct
44 Correct 626 ms 2408 KB Output is correct
45 Correct 17 ms 2252 KB Output is correct
46 Execution timed out 1600 ms 2860 KB Time limit exceeded
47 Correct 1006 ms 2884 KB Output is correct
48 Correct 957 ms 2752 KB Output is correct
49 Execution timed out 1576 ms 3164 KB Time limit exceeded
50 Correct 43 ms 1676 KB Output is correct