#include <bits/stdc++.h>
using namespace std;
int main(){
	long long int money=0,in,cj=0;//cj，储蓄进的钱数; 
	int bg=0;//不够嘛？ 
	for(int i=1;i<=12;i++){
		cin >> in;
		money += 300;
		money -= in;
		if (money < 0) bg = i;
		else if (money >= 100){
			cj += money / 100 * 100;
			money %= 100;
		}
	}
//	cout << bg;
	if (bg!=0) cout << "-" << bg;
	else cout << cj*1.2+money;
}