#include <bits/stdc++.h>
using namespace std;
class myClass{
public:
string s1[10];
string s2[10];
int count=0;
};
int main() {
int n;
myClass my;
while(cin>>n){
if(n == 0 || my.count == 10)break;
string s = to_string(n);
my.s1[my.count] = s;
reverse(s.begin(),s.end());
n = stoi(s);
s = to_string(n);
my.s2[my.count++] = s;
}
for(int i =0;i<my.count;i++)
cout<<my.s1[i]<<" "<<my.s2[i]<<endl;
}
// 64 位输出请用 printf("%lld")
qd

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