oj.uz

Submission #443056

# Submission time Handle Problem Language Result Execution time Memory
443056 2021-07-09T14:50:12 Z leaked Marriage questions (IZhO14_marriage) C++14
66 / 100
 200 ms 2872 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++;
                c--;
                rem.pb(mt[l-1]);
                mt[mt[l-1]]=-1;
                mt[l-1]=-1;
            }
        }
        while(r<n && sz(rem)){
            r++;tt++;h[r]=1;
            while(sz(rem) && 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 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 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 972 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 1 ms 972 KB Output is correct
24 Correct 1 ms 972 KB Output is correct
25 Correct 6 ms 1228 KB Output is correct
26 Incorrect 2 ms 1100 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 3 ms 1100 KB Output isn't correct
30 Incorrect 3 ms 1100 KB Output isn't correct
31 Correct 80 ms 1668 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 2100 KB Output is correct
36 Correct 52 ms 2124 KB Output is correct
37 Correct 173 ms 2040 KB Output is correct
38 Incorrect 23 ms 2380 KB Output isn't correct
39 Correct 59 ms 1356 KB Output is correct
40 Correct 4 ms 1356 KB Output is correct
41 Incorrect 8 ms 1552 KB Output isn't correct
42 Incorrect 11 ms 1740 KB Output isn't correct
43 Incorrect 14 ms 1908 KB Output isn't correct
44 Incorrect 24 ms 2248 KB Output isn't correct
45 Incorrect 16 ms 2124 KB Output isn't correct
46 Incorrect 34 ms 2804 KB Output isn't correct
47 Incorrect 30 ms 2628 KB Output isn't correct
48 Incorrect 26 ms 2636 KB Output isn't correct
49 Incorrect 36 ms 2872 KB Output isn't correct
50 Correct 200 ms 1484 KB Output is correct