#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/a << " " << 39%a<< endl << 39/b <<" " << 39%b << endl <<39/c <<" " << 39%c; return 0; }