import java.io.BufferedReader;
import java.io.InputStreamReader;

public class No197 {

    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(
                    System.in));
            String SBefore = br.readLine();
            int N = Integer.parseInt(br.readLine());
            String SAfter = br.readLine();
            if (dfs(N % 4, SBefore, SAfter)) {
                System.out.println("FAILURE");
            } else {
                System.out.println("SUCCESS");
            }

        } catch (Exception e) {
            System.err.println("Error:" + e.getMessage());
        }
    }

    static boolean dfs(int N, String S, String SAfter) {
        if (N == 0) {
            if (S.equals(SAfter)) {
                return true;
            } else {
                return false;
            }
        }

        if (dfs(N - 1, swap(S, true), SAfter)) {
            return true;
        }

        if (dfs(N - 1, swap(S, false), SAfter)) {
            return true;
        }

        return false;
    }

    // trueなら左
    // falseなら右
    static String swap(String S, boolean changeSide) {
        char[] c = S.toCharArray();
        char swap = c[1];
        if (changeSide) {
            c[1] = c[0];
            c[0] = swap;
        } else {
            c[1] = c[2];
            c[2] = swap;
        }

        return new String(c);

    }

}