#include <bits/stdc++.h>
using namespace std;
double a,b,c,tbc;
int main()
{
cin>>a>>b>>c;
tbc=(a+b+c)/3;
cout<<"Tong la:"<<fixed<<setprecision(2)<<a+b+c<<endl;
cout<<"TBC la:"<<fixed<<setprecision(2)<<tbc;
return 0;
}
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