#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int a=5, b=8,c=12; float d=(a+b+c)/3.0; printf("%.3f\n",d); cout<<39/a<<" "<<39%a<<endl; cout<<39/b<<" "<<39%b<<endl; cout<<39/c<<" "<<39%c<<endl; return 0; }