#include<iostream>
using namespace std;
int main(){
	int now=0,cb=0,sum=0;
	int kx[12];
	for(int i=1;i<=12;i++)cin>>kx[i];
	for(int i=1;i<=12;i++){
		now+=300;
		if(kx[i]>now){
			sum=i;
			break;
		}
		now-=kx[i];
		if(now>=100){
			cb+=now-now%100;
			now=now%100;
		}
	}
	if(sum!=0)cout<<"-"<<sum;
	else cout<<(double)cb*1.2+now;
	return 0;
}