//看清题目要求的小数位数，五位是%.5lf，注意空格
#include <cstdio> #include <iostream> using namespace std; int main() { double a,b; cin>>a>>b; printf("MEDIA = %.5lf",(a*3.5+b*7.5)/11);//11=3.5+7.5 return 0; }
