#include <iostream>
using namespace std;
int a[13],now,k,cue;
int main() {
	for (int i = 1;i <= 12;i++) {
		cin >> a[i];
	}
	for (int i = 1;i <= 12;i++) {
		now += 300;
		if (now < a[i]) {
			cout << "-" << i;
			return 0;
		}
		else {
			now -= a[i];
			k = now;
			k % 100 == 0 ? k /= 100 : k /= 100 - 1;
			cue += k * 100;
			now -= k * 100;
		}
	}
	cout << cue * 1.2;
}

cpp上能运行（而且样例过了），为啥编译失败 新手，轻点喷qwq