CHUSO C++

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

int n,d,c;
int main()
{
    freopen("chuso.inp","r",stdin);
    freopen("chuso.out","w",stdout);
    cin>>n;
    d = n/1000;
    c = n%10;
    cout<<"Chu so cuoi cung la "<<c<<endl;
    cout<<"Chu so dau tien la "<<d;
}