#include <stdio.h>
int main() {
    int num = 0;
    int a = 0;
    int i = 0;
    scanf("%d", &num);
    for (i = 1; i <= num; i++) {
        int number = i;
        int sum = 0;
        while (number) {
            sum = sum * 10 + number % 10;
            number /= 10;
        }
        if (i == sum) {
            printf("%d\n", sum);
        }
    }
    return 0;
}