#include<iostream> #include<cstdio> using namespace std; int main(){ int b=5,a=8,g=12,y=39; printf("%.3f",(b+a+g)/3.0); cout<<y/b<<"<<" "<<y%b<<"元"<<endl; cout<<y/a<<"<<" "<<y%a<<"元"<<endl; cout<<y/g<<"<<" "<<y%g<<"元"<<endl; return 0; }