#include<iostream> using namespace std; int main(){ int a = 5,b = 8,c = 12; double s = (a+b+c)/3.0; printf("%.3lf\n",s); printf("%d %d\n",39/a,39%a); printf("%d %d\n",39/b,39%b); printf("%d %d\n",39/c,39%c); return 0; }