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