#include<bits/stdc++.h> using namespace std; int main() { int a,b,c; a=5; b=8; c=12; int 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; }