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