#include<bits/stdc++.h>
using namespace std;
int main()
{
	double a,b;
	scanf("%lf%lf",&a,&b);
	double res=(a*3.5+b*7.5)/11.0;
	printf("MEDIA = %.5lf",res); 
	return 0;
}

#include<bits/stdc++.h> using namespace std; int main(){ double a,b; scanf("%lf%lf",&a,&b); double c=(a3.5+b7.5)/11.0; printf("MEDIA = %.5 lf",c); return 0; }