6.1.7

#include <iostream>
#include <cmath>
using namespace std;

 int reverse (int n)
{
    int k=0;
    while (n>0)
    {
        k=n%10;
        cout<<k;
        n/=10;
    }
}

int main()

{
    int n;
    cin>>n;
    reverse(n);
    return 0;
}