oj.uz

Submission #443038

# Submission time Handle Problem Language Result Execution time Memory
443038 2021-07-09T14:06:10 Z leaked Marriage questions (IZhO14_marriage) C++14
66 / 100
 215 ms 2948 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;
vec<int>rem;
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;
    scanf("%d%d%d",&n,&m,&k);
    for(int i=0;i<k;i++){
        int v,u;
        scanf("%d%d",&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,rem.pb(i+n);
    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--;
                rem.pb(mt[l-1]);
                mt[l-1]=-1;
            }
        }
        while(r<n && c!=m){
            r++;tt++;h[r]=1;
            while(c!=m && kuhn(rem.back())){
                c++;rem.pop_back();
            }
        }
        ans+=n-r;
    }
    printf("%lld",ans);
    return 0;
}

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

Compilation message

marriage.cpp: In function 'int main()':
marriage.cpp:46:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |     scanf("%d%d%d",&n,&m,&k);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
marriage.cpp:49:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   49 |         scanf("%d%d",&v,&u);--v;--u;
      |         ~~~~~^~~~~~~~~~~~~~

Subtask #1
66.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 972 KB Output isn't correct
2 Incorrect 1 ms 972 KB Output isn't correct
3 Incorrect 1 ms 972 KB Output isn't 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 2 ms 972 KB Output is correct
11 Correct 1 ms 972 KB Output is correct
12 Correct 1 ms 984 KB Output is correct
13 Correct 1 ms 972 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 1060 KB Output is correct
19 Correct 2 ms 1100 KB Output is correct
20 Correct 1 ms 972 KB Output is correct
21 Correct 1 ms 972 KB Output is correct
22 Correct 1 ms 972 KB Output is correct
23 Correct 2 ms 972 KB Output is correct
24 Correct 2 ms 972 KB Output is correct
25 Correct 6 ms 1228 KB Output is correct
26 Incorrect 2 ms 1060 KB Output isn't correct
27 Correct 1 ms 972 KB Output is correct
28 Correct 1 ms 972 KB Output is correct
29 Incorrect 5 ms 1100 KB Output isn't correct
30 Incorrect 3 ms 1100 KB Output isn't correct
31 Correct 82 ms 1728 KB Output is correct
32 Incorrect 2 ms 1100 KB Output isn't correct
33 Correct 1 ms 1100 KB Output is correct
34 Correct 2 ms 1100 KB Output is correct
35 Correct 69 ms 2160 KB Output is correct
36 Correct 52 ms 2092 KB Output is correct
37 Correct 163 ms 1844 KB Output is correct
38 Incorrect 29 ms 2372 KB Output isn't correct
39 Correct 58 ms 1356 KB Output is correct
40 Correct 5 ms 1356 KB Output is correct
41 Incorrect 7 ms 1576 KB Output isn't correct
42 Incorrect 9 ms 1676 KB Output isn't correct
43 Incorrect 15 ms 1864 KB Output isn't correct
44 Incorrect 25 ms 2340 KB Output isn't correct
45 Incorrect 12 ms 2124 KB Output isn't correct
46 Incorrect 33 ms 2760 KB Output isn't correct
47 Incorrect 30 ms 2804 KB Output isn't correct
48 Incorrect 26 ms 2652 KB Output isn't correct
49 Incorrect 36 ms 2948 KB Output isn't correct
50 Correct 215 ms 1460 KB Output is correct