1006.cpp

#include <iostream>
#include <stdio.h>

using namespace std;

int main(){
    float a,b,c;
    
    cin >> a;
    cin >> b;
    cin >> c;
    
    printf("MEDIA = %.1f\n", (a*2 + b*3 + c*5)/(2+3+5));
    return 0;
}