Submission #1005428

#	Time	Username	Problem	Language	Result	Execution time	Memory
1005428		idiotcomputer	Potatoes and fertilizers (LMIO19_bulves)	C++11	100 / 100	145 ms	11456 KiB

bulves

#include <bits/stdc++.h>
using namespace std;
#define ll long long int 
#define sz size

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

	int n;
	cin >> n;

	ll res = 0;
	priority_queue<ll, vector<ll>, greater<ll>> vals;
	vals.push(0);
	ll a,b;
	ll r = 0;
	for (int i = 0; i < n; i++){
		cin >> a >> b;
		a = a-b;
		r += a;
		res += abs(r);
	//	cout << r << " - ";
		if (r >= 0) vals.push(-1*r);
		if (vals.sz() > 1 && vals.top() < -1*r){
		//	cout <<vals.top(); 
			vals.pop();
			if(r>=0)vals.push(-1*r);
		}
	//	cout << '\n';
	}
//	cout << res << "\n";
	while (vals.sz()>0){ res -= (r-max((ll)0,(r+vals.top()))); vals.pop();}
	//cout << "\n";
	cout << res << '\n';
	return 0;
}

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