?

#include <bits/stdc++.h>
using namespace std;
double d1=3.0;
double d2=3.3;
double d3=4.2;
int t1=310;
int t2=210;
double money;
int m,sum;
int main() {
    for(int i=1;i<=12;i++){
        cin>>m;
        sum+=m;
        if(sum<=310){
            t1-=m;
            money=d1*m;
            printf("%.1lf",money);
        }
        else if(sum>310&&sum<=520){
            t2=t2-(m-t1);
            money=t1*d1+(m-t1)*d2;
            t1=0;
            printf("%.1lf",money);
        }
        else{
            money=t1*d1+t2*d2+(m-t1-t2)*d3;
            t1=0;
            t2=0;
            printf("%.1lf",money);
        }
    }
     return 0;
}