#include <bits/stdc++.h>
using namespace std;
int main(){
	int x[12],temp=0,ans,n;
	const int y=300;
	for (int i=0;i<12;i+=1){
		cin>>x[i];
	}
	for (int i=0;i<12;i+=1){
		n+=y;
		n=n-x[i];
		if(n<0){
			ans=0-(i+1);
			break;
		}
		if(n>=100){
			temp+=(floor(n/100))*100;
			n-=floor(n/100)*100;
		}
	}
	if (ans>=0){
		ans=n+1.2*temp;
	}
	cout<<ans<<endl;
	return 0;
}