#include<bits/stdc++.h> using namespace std; int main() { int h, jj=0, mm=0; for(int i = 1;i <= 12;i++){ cin>>h; jj+=300; if(jj<h){ cout<<-i; return 0; } jj -= h; mm+=jj/100; jj = jj%100; } cout<<mm*100+jj; return 0; }