#include <bits/stdc++.h>
using namespace std;
template <class Number>
Number backward (Number number, int base = 10){
Number result = 0;
do
result = result*base + number % base;
while(number /= base);
return result;
}
int main(){
short a = 1234;
cout << a << ' ' << backward (a) << '\n';
unsigned long long n;
while (cin >> n)
cout << n << ' ' << backward(n) << '\n';
}
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