#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a[12],ans=0,flag=1,flag2=0,sum=0;
	for(int i=0;i<12;i++)
	{
		ans+=300;
		cin>>a[i];
		if(a[i]>ans)
		{
			flag2=i+1;
			flag=0;
		}
		ans-=a[i];
		sum+=ans/100*100;
		ans=ans%100;
		cout<<"ans="<<ans<<endl;
		cout<<"sum="<<sum<<endl;
	}
	if(flag)
		cout<<(ans+sum)+(ans+sum)*0.2;
	else
		cout<<'-'<<flag2;
	return 0;
}