Submission #1150751

#	Time	Username	Problem	Language	Result	Execution time	Memory
1150751		KK_1729	Exhibition (JOI19_ho_t2)	C++20	100 / 100	31 ms	2780 KiB

joi2019_ho_t2

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

#define int long long
#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define pb push_back
#define all(a) a.begin(), a.end()
#define endl "\n"

void printVector(vector<int> a){
    for (auto x: a) cout << x << " ";
    cout << endl;
}

void solve(){
    int n, m; cin >> n >> m;
    vector<pair<int, int>> o(n);


    FOR(i,0,n){
        cin >> o[i].second >> o[i].first;
    }
    sort(all(o));
    vector<int> frames(m);
    FOR(i,0,m) cin >> frames[i];
    sort(all(frames));
    int ans = 0;
    int curr = m-1;
    for (int i = n-1; i >= 0; i--){
        if (curr >= 0 && o[i].second <= frames[curr]){
            curr--;
            ans++;
        }
    }
    cout << ans << endl;
}


int32_t main(){
    ios::sync_with_stdio(false);cin.tie(nullptr);
    int t = 1; // cin >> t;
    while (t--) solve();
}

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