#include<iostream>
using namespace std;
int remain=0,extra=0,cnt,unable=0;
int budget[12];
int main(){
    for(int i=0;i<12;i++){
        cin>>budget[i];
    }
    for(int j=0;j<12;j++){
        cnt++;
        if(remain+300-budget[j]>=0){
            if(remain+300-budget[j]>=100){
                remain+=300-budget[j];
                for(int k=0;k<(remain+300-budget[j])/100;k++){
                    extra += 100;
                    remain -= 100;
                }
            }
            else{
                remain+=300-budget[j];
            }
        }
        else{
            remain = 0;
            if(unable==0){
                unable = cnt;
            }
        }
    }
    extra = extra*1.2;
    remain += extra;
    if(unable!=0){
        printf("-%d",unable);
    }
    else{
        cout<<remain;
    }
    return 0;
}