using System;
using System.Linq;
class Program {
    static void Main() {
        string s0 = Console.ReadLine();
        int n = int.Parse(Console.ReadLine());
        string s1 = Console.ReadLine();
        Console.WriteLine(judge(n, s0, s1));
    }

    static string judge(int n, string s0, string s1) {
        if (n == 0 && s0 != s1) return "SUCCESS";

        int cnt0 = s0.ToCharArray().Count(x => x == 'o');
        int cnt1 = s1.ToCharArray().Count(x => x == 'o');

        if (cnt0 != cnt1) return "SUCCESS";
        if (cnt0 == 0 || cnt0 == 3) return "FAILURE";

        char only = cnt0 == 1 ? 'o' : 'x';
        if (s0[1] == only && s1[1] == only && n == 1) return "SUCCESS";
        if (s0[0] == only && s1[2] == only && n == 1) return "SUCCESS";
        if (s0[2] == only && s1[0] == only && n == 1) return "SUCCESS";
        return "FAILURE";
    }
}