Submission #253303

#	Time	Username	Problem	Language	Result	Execution time	Memory
253303		DystoriaX	Potatoes and fertilizers (LMIO19_bulves)	C++14	100 / 100	241 ms	7532 KiB

bulves

#include <bits/stdc++.h>

using namespace std;

int n;
long long lazy, vc, slope;
priority_queue<long long, vector<long long>, greater<long long> > pq;

int main(){
	ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
	
	cin >> n;

	pq.push(0);

	for(int i = 1; i <= n; i++){
		int a, b;
		cin >> a >> b;

		int d = a - b;

		lazy += d;

		if(pq.top() + lazy < d){
			vc += d - (pq.top() + lazy);

			if(pq.top() != 0) pq.pop();

			if(d <= lazy){
				pq.push(d - lazy);
				pq.push(d - lazy);
			}
		} else {
			pq.push(d - lazy);
		}
	}

	long long cur = pq.top() + lazy;

	slope = 0;
	while(!pq.empty()){
		long long nxt = pq.top() + lazy; pq.pop();

		nxt = min(nxt, 0LL);

		vc += (nxt - cur) * slope;
		slope++; cur = nxt;
	}

	if(cur != 0) vc += -cur * slope;

	cout << vc << "\n";

	return 0;
}

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