#include<bits/stdc++.h>
using namespace std;
int main(){
	double a,zong = 0,ans = 0;
	for (int i = 1;i <= 12;i++){
		ans = 0;
		cin >> a;
		if (zong + a > 310 && zong + a <= 520){
			ans += 10 * 3 + (a - 10) * 3.3;
		}else if (zong + a > 520){
			ans += 220 * 3.3 + (a - 220) * 3.3;
		}else {
			ans += a * 3;
		}
		zong += a;
		printf("%.1lf\n",ans);
		ans = 0;
	}
	return 0;
}