Submission #1351123

#	Time	Username	Problem	Language	Result	Execution time	Memory
1351123		guardianec	Exhibition (JOI19_ho_t2)	C++20	100 / 100	28 ms	2628 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);

    ll n,m;
    cin >> n >> m;
    vector<pair<ll,ll>> a(n);
    vector<ll> b(m);
    for (int i=0; i<n; i++) {
        cin >> a[i].second >> a[i].first;
    }
    for (int i=0; i<m; i++) {
        cin >> b[i];
    }

    sort(a.begin(), a.end());
    sort(b.begin(), b.end());

    ll res = 0;
    ll j = n-1;
    for (int i=m-1; i>=0 && j>=0; i--) {
        while (j>=0 && a[j].second>b[i]) j--;
        if (j>=0) {
            res++; j--;
        }
    }

    cout << res;
}

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