#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include "testing.h"

int main()
{
    int N, a, b, c, d, e, f, g;

    scanf("%d", &N);

    a = N / 100000 % 10;
    b = N / 10000 % 10;
    c = N / 1000 % 10;
    d = N / 100 % 10;
    e = N / 10 % 10;
    f = N % 10;

    if (b < a && b < c)
    {
        g = a;
        a = b;
        b = g;
    }

    if (c < a && c < b)
    {
        g = a;
        a = c;
        c = g;
    }

    if (c < b)
    {
        g = b;
        b = c;
        c = g;
    }

    if (e < d && e < f)
    {
        g = d;
        d = e;
        e = g;
    }

    if (f < d && f < e)
    {
        g = d;
        d = f;
        f = g;
    }

    if (f < e)
    {
        g = e;
        e = f;
        f = g;
    }

    if (a == d && b == e && c == f)
    {
        printf("Number is lucky");
    }

    else
    {
        printf("Number is not lucky");
    }

    return 0;
}