Submission #772942

#	Time	Username	Problem	Language	Result	Execution time	Memory
772942		Lecorbio	Potatoes and fertilizers (LMIO19_bulves)	C++14	100 / 100	151 ms	15036 KiB

bulves

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

#define fi first
#define se second
#define mp make_pair
typedef long long ll;

priority_queue <ll> q;

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);

	int n; cin >> n;
	ll ans=0, pref=0, a, b;

	for (int i=0; i<n; i++) q.push(0);
	for (int i=0; i<n-1; i++){
        cin >> a >> b;
        pref += (a-b);

        q.push(pref);
        if (pref < q.top()){
            ans += q.top() - pref;
            q.pop();
            q.push(pref);
        }
	}

	cin >> a >> b;
	pref += (a-b);
	while (q.size() != 0 && pref < q.top()){
        ans += q.top() - pref;
        q.pop();
	}
	cout << ans << '\n';
	return 0;
}

• Subtask 1: 24 / 24
• Subtask 2: 10 / 10
• Subtask 3: 20 / 20
• Subtask 4: 10 / 10
• Subtask 5: 36 / 36