#include<iostream> #include<iomanip> using namespace std; int main(){ long long b=5,a=8,g=12; double average=(b+a+g)/3.0; cout<<fixed<<setprecision(3)<<average<<endl; long long m=39; int jin1 = m/b; int rest1=m%b; cout<<jin1<<" "<<rest1<<endl; int jin2 = m/a; int rest2=m%a; cout<<jin2<<" "<<rest2<<endl;啊 int jin3 = m/g; int rest3=m%g; cout<<jin3<<" "<<rest3<<endl; return 0; }