#include<iostream> #include<cstdio> using namespace std; int main(){ int b=5,a=8,g=12,y=39; printf("%.3f\n",(b+a+g)/3.0); cout<<y/b<<" "<<y%b<<endl; cout<<y/a<<" "<<y%a<<endl; cout<<y/g<<" "<<y%g<<endl; return 0; }