#include <stdio.h>

int main() {
    int n, a, b;
    scanf("%d", &n);
    for (int i = 1; i <= n; i++) {
        b = 0;
        a = i;
        while (a) {
            b = (a%10) + b*10;
            a = a/10;
        }
        if (b == i)
            printf("%d\n", b);
    }
    return 0;
}