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