#include<iostream>
using namespace std;
int main()
{
    int j;
    for (j=11;j<=999;j++)
    {
        int k=0,l=j;    //k应在这里初始化
        while (l>0)
        {
            k=k*10+l%10;
            l=l/10;
        }
        if (k==j)
            cout<<k<<" "<<j<<endl;
    }
    return 0;
}