#include <stdio.h>

int main() {
	int a[12];
	int n, m, p = 0;
	for (int i = 0; i < 12; i++) {
		scanf("%d", &a[i]);
	}
	for (int i = 0; i < 12; i++) {
		m = 300 - a[i];
		if (m < 0) {
			printf("-%d", i + 1);
			break;
		}
		if (m >= 100) {
			n = n + (m / 100) * 100;
			m = m - (m / 100) * 100;
		}
		if (i == 11) {
			p = m + n * 1.2;
			printf("%d", p);
			break;
		}
		a[i + 1] = a[i + 1] - m + (m / 100) * 100;
	}
	return 0;
}