Submission #583163

#	Time	Username	Problem	Language	Result	Execution time	Memory
583163		stevancv	Exhibition (JOI19_ho_t2)	C++14	100 / 100	68 ms	5200 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 1e5 + 2;
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n, m;
    cin >> n >> m;
    vector<pair<int, int>> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i].first >> a[i].second;
    }
    sort(a.rbegin(), a.rend());
    vector<int> b(m);
    for (int i = 0; i < m; i++) {
        cin >> b[i];
    }
    sort(b.rbegin(), b.rend());
    vector<int> bound(n);
    int j = 0;
    for (int i = 0; i < n; i++) {
        while (j < m && a[i].first <= b[j]) j++;
        bound[i] = j;
        swap(a[i].first, a[i].second);
    }
    vector<int> ord(n);
    iota(ord.begin(), ord.end(), 0);
    sort(ord.begin(), ord.end(), [&] (int i, int j) {
            if (a[i].first != a[j].first) return a[i].first > a[j].first;
            return a[i].second > a[j].second;
    });
    int ans = 0;
    for (int i : ord) {
        if (bound[i] >= ans + 1) ans++;
    }
    cout << ans << en;
    return 0;
}

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