awwwa

#include<iostream>
using namespace std;
int main(){
    int n,b;
    cin>>n;
    for(int j=1;j<=n;j++){
        int sum=0,b=j;
        while(b){
            sum=sum*10+b%10;
            b/=10;
        }
        if(sum==j)cout<<sum<<endl;
        }
    return 0;
}