#include<iostream> #include<cstdio> using namespace std; int main() { const int banana=5,apple=8,grape=12; double avg; avg=(banana+apple+grape)/3.0; printf("%.3lf元\n",avg); cout<<39/5<<" "<<39%5<<endl; cout<<39/8<<" "<<39%8<<endl; cout<<39/12<<" "<<39%12<<endl; return 0; }