#include <iostream>
#include <cmath>
using namespace std;
int main() {
    const int income = 300;
    int n;
    int remain = 0;
    int deposit = 0;
    for(int i=1;i<=12;i++){
        cin>>n;
        remain +=income;
        if(remain-n>=100){
            remain =remain - n;
            deposit =deposit + (remain-(remain%100));
            remain =remain - deposit;
        }
        else if(remain-n<100&&remain-n>=0){
            remain -=n;
        }
        else if(remain-n<0){
            cout<<remain-n;
            return 0;
        }

    }

    cout<<deposit*1.2+remain;


    return 0;
}