#include <stdio.h>
#include <stdlib.h>

int length(int n) {
    int counter = 0;
    while (n != 0) {
        n = n/10;
        counter++;
    }
    return counter;
}

int palindrome(int n) {
    int flag = 1;
    int i = 0, j = 0;
    char *number = (char *)malloc(length(n) * sizeof(char));
    sprintf(number, "%d", n);
    j = length(n) - 1;
    while (i < j) {
        if (number[i] != number[j]) {
            flag = 0;
            break;
        }
        i++;
        j--;
    }
    return flag;
}

int main(int argc, char *argv[]) {
    int n = 1;
    while (n <= 999999)
        if (palindrome(n))
            printf("%d\n", n++);
    return 0;
}