#include<iosream> #include<manip> using namespace std; int main(){ int a=5, b=8,c=12; float d=(a+b+c)/3.0; printf(".3%f",d); cout<<39/a<<" "<<39%a<<endl; cout<<39/b<<" "<<39%b<<endl; cout<<39/c<<" "<<39%c<<endl; return 0; }