#include<bits/stdc++.h> using namespace std; int main() { int sum=0,ct=0,flag=0,n; for(int i=1;i<=12;i++){ cin>>n; sum+=300-n; while(sum>=100){ sum-=100; ct++; } if(sum<0){ cout<<-i<<endl; flag=1; break; } } if(flag==0) cout<<ct*120+sum<<endl; return 0; }