#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;
}