Submission #1280177

#	Time	Username	Problem	Language	Result	Execution time	Memory
1280177		ducanh0811	Exhibition (JOI19_ho_t2)	C++20	100 / 100	37 ms	3812 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
#define int long long
#define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; ++i)
#define REV(i, a, b) for (int i = (a), _b = (b); i >= _b; --i)
using namespace std;

#define MAXN 100005
int n, m;
vector<pair<int, int>> a;
vector<int> b;

void solve(){
    cin >> n >> m;
    FOR(i, 1, n){
        int s, v; cin >> s >> v;
        a.push_back({v, s});
    }
    FOR(i, 1, m){
        int x; cin >> x;
        b.push_back(x);
    }
    sort(b.begin(), b.end(), greater<int>());
    sort(a.begin(), a.end(), greater<pair<int, int>>());
    int ptr = 0;
    int res = 0;
    for (int &x : b) {
        while (ptr < (int)a.size() && a[ptr].second > x) ptr++;
        if (ptr < (int)a.size()){
            ptr++;
            res++;
        }
    }
    cout << res;
}

int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    solve();
    return 0;
}

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