AC

#include<bits/stdc++.h>//submitRecord//
using namespace std;
//const int N=1e7+10;
int main(){
//freopen("","r",stdin);
//freopen("","w",stdout);
ios::sync_with_stdio();
cin.tie(nullptr);
cout.tie(nullptr);
int a,money=0,m=0;
for(int i=1;i<=12;i++){
money+=300;
cin>>a;
if(money-a<0){
cout<<"-"<<i;
return 0;
}
money-=a;
m+=money/100100;
money%=100;
}
cout<<money+(m+m0.2);
//fclose(stdin);
//fclose(stdout);
return 0;
}