#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; printf("%.3f",(a+b+c)/3.0); cout<<endl<<39/5<<" "<<39%5<<endl<<39/8<<" "<<39%8<<endl<<39/12<<" "<<39%12; return 0; }