Submission #55253

#	Time	Username	Problem	Language	Result	Execution time	Memory
55253		shoemakerjo	Art Exhibition (JOI18_art)	C++14	50 / 100	1026 ms	119448 KiB

art

#include <bits/stdc++.h>

using namespace std;
#define maxn 500010
#define ll long long

map<ll, ll> mp;
int N;
ll a[maxn], b[maxn];

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cin >> N;
	for (int i = 0; i < N; i++) {
		cin >> a[i] >> b[i];
		mp[0-a[i]] += b[i];
	}
	ll ans = 0LL;
	ll cbest = 0;
	ll lastval = 0-mp.begin()->first;
	for (auto it = mp.begin(); it != mp.end(); ++it) {
		ll cspot = 0-it->first;
		ll cnum = it->second;
		// cout << cspot << ": " << cnum << endl;
		cbest = max(cnum, cbest - (lastval - cspot) + cnum);
		ans = max(ans, cbest);
		lastval = cspot;
	}
	cout << ans << endl;

}

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 0 / 50