Submission #808875

#	Time	Username	Problem	Language	Result	Execution time	Memory
808875		annabeth9680	Exhibition (JOI19_ho_t2)	C++17	100 / 100	43 ms	5592 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
#define ll long long
using namespace std;

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int N,M; cin >> N >> M;
    vector<pair<ll,ll>> art(N+1);
    for(int i = 1;i<=N;++i) cin >> art[i].second >> art[i].first;
    sort(art.begin(),art.end());
    vector<ll> frames(M+1);
    for(int i = 1;i<=M;++i) cin >> frames[i];
    sort(frames.begin(),frames.end());
    int j = N, ans = 0;
    for(int i = M;i>=1;--i){
        while(j > 0 && art[j].second > frames[i]) j--;
        if(j > 0){
            ans++;
            --j;
        }
    }
    cout << ans << "\n";
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 40 / 40
• Subtask 3: 50 / 50