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