TNBQ C++

#include <bits/stdc++.h>
using namespace std;

int a,b;
float tb;

int main()
{
    freopen("tnbq.inp","r",stdin);
    freopen("tnbq.out","w",stdout);
    cin>>a>>b;
    tb = (a+b)/float(2);
    cout<<"Thu nhap binh quan: "<<fixed<<setprecision(2)<<tb;
}