Submission #237795

#	Time	Username	Problem	Language	Result	Execution time	Memory
237795		dCoding	Exhibition (JOI19_ho_t2)	C++14	100 / 100	67 ms	5624 KiB

joi2019_ho_t2

#include <bits/stdc++.h>

#define ll long long int
#define pll pair<ll, ll>
#define F first
#define S second
#define mp make_pair
#define pb push_back
#define F0R(i, n) for(auto i = 0; i < (n); i++)
#define FOR(i, a, b) for(auto i = (a); i <= (b); i++)
#define ROF(i, a, b) for(auto i = (a); i >= (b); i--)

using namespace std;

int main()
{
	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
	int n, m; cin >> n >> m;
	vector<pll> photo(n);
	vector<ll> frame(m);
	F0R(i, n) cin >> photo[i].S >> photo[i].F;
	F0R(i, m) cin >> frame[i];
	sort(photo.begin(), photo.end());
	sort(frame.begin(), frame.end());
	int ans = 0;
	int pidx = n - 1, fidx = m - 1;
	while(pidx >= 0 && fidx >= 0) {
		if(frame[fidx] >= photo[pidx].S) ans++, pidx--, fidx--;
		else pidx--;
	}
	cout << ans;
}

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