#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() using namespace std; int main(){ int a=5,b=8,c=12,d=39,e,f,g,h; e=(a+b+c)/3; printf("%.3lf",e); h=d%5; cout<<(39-h)/5<<" "<<h; return 0; }