#include <stdio.h>

int isPalindrome(int n) {
    int temp = n, reversed = 0;
    while(temp > 0) {
        reversed = reversed * 10 + temp % 10;
        temp /= 10;
    }
    
    
    return n == reversed;
}

int main() {
    int n = 0;
    scanf("%d", &n);
    for(int i = 1; i <= n; i++) {
        if(isPalindrome(i)) {
            printf("%d\n", i);
        }
    }
    
    return 0;
}