Submission #1041218

#	Time	Username	Problem	Language	Result	Execution time	Memory
1041218		dpsaveslives	Exhibition (JOI19_ho_t2)	C++17	100 / 100	33 ms	4528 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
#define f first
#define s second
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<int,int>> pictures(N);
    for(int i = 0;i<N;++i){
        cin >> pictures[i].s >> pictures[i].f;
    }
    sort(pictures.begin(),pictures.end());
    vector<int> frames(M);
    for(int i = 0;i<M;++i){
        cin >> frames[i];
    }
    sort(frames.begin(),frames.end());
    int j = N-1, ans = 0;
    for(int i = M-1;i>=0;--i){
        while(j >= 0 && pictures[j].s > frames[i]){
            --j;
        }
        if(j >= 0){
            --j;
            ++ans;
        }
    }
    cout << ans << "\n";
    return 0;
}

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