#include<bits/stdc++.h>
using namespace std;
int main(){
float x=8.5,y=5.6,z=6.2;
float n=8.5*2+5.6*3+6.2;  
    cout<<n;
    return 0;
}
/**************************************************************
	Problem: 1610
	User: huanghao
	Language: C++
	Result: Wrong Answer
****************************************************************/