#include<iostream>
using namespace std;
int main(){
	float m,sum=0,y;
	for(int i=1;i<=12;i++){
		cin>>m;
		sum+=m;
		if(sum<=310)y=sum*3.0;
		else if(sum<=520)y=310*3.0+(sum-310)*3.3;
		else y=310*3.0+(520-310)*3.3+(sum-520)*4.2;
		printf("%.1lf\n",y);
	}
    return 0;
}