啊这......

#include<bits/stdc++.h>
using namespace std;
double a,sum,m[10]=
{28.9,32.7,45.6,78,35,86.2,27.8,43,56,65};
int main(){
    for (int i = 1 ; i < = 10 ; ++i ) {
        cin >> a;
        for (int j = 1 ; j<=a;++j)
	    sum+=m[i];
    }
    printf("%.1lf",sum);
    return 0;
}