BPCAN C++

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

int x,bp;
float can;
int main()
{
    freopen("bpcan.inp","r",stdin);
    freopen("bpcan.out","w",stdout);
    cin>>x;
    bp=x*x;
    can=sqrt(x);
    cout<<"Binh phuong cua "<<x<<" la "<<bp<<endl;
    cout<<fixed <<setprecision(2);
    cout<<"Can bac hai cua "<<x<<" la "<<can;
}