import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.HashSet;
import java.util.NoSuchElementException;
import java.util.Set;

public class Main {
	public static void main(String args[]) {
		FastScanner scanner = new FastScanner();
		String sb=scanner.next();
		long n = scanner.nextLong();
		String sa=scanner.next();
		Set<String> set = new HashSet<>(Arrays.asList(sb.split("")));
		if(sb.equals(sa)&&set.size()==1) {
			System.out.println("FAILURE");
			return;
		}
		if(n==0) {
			System.out.println(sb.equals(sa)?"FAILURE":"SUCCESS");
		}else if(n==1) {
			if(sb.equals(sa)) {
				System.out.println("SUCCESS");
				return;
			}
			String tb1[]=sb.split("");
			String tmp=tb1[0];
			tb1[0]=tb1[1];
			tb1[1]=tmp;
			String tb2[]=sb.split("");
			tmp=tb2[2];
			tb2[2]=tb2[1];
			tb2[1]=tmp;
			System.out.println(String.join("",tb1).equals(sa)||String.join("",tb1).equals(sa)?"FAILURE":"SUCCESS");
		}else {
			String tb[]=sb.split("");
			String ta[]=sa.split("");
			Arrays.sort(tb);
			Arrays.sort(ta);
			System.out.println(String.join("",tb).equals(String.join("",ta))?"FAILURE":"SUCCESS");
		}
	}
}

class FastScanner {
    private final InputStream in = System.in;
    private final byte[] buffer = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;
    private boolean hasNextByte() {
        if (ptr < buflen) {
            return true;
        }else{
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        }
        return true;
    }
    private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
    private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
    public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();}
    public String next() {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while(isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }
    public long nextLong() {
        if (!hasNext()) throw new NoSuchElementException();
        long n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        }
    }
    public int nextInt() {
        long nl = nextLong();
        if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
        return (int) nl;
    }
    public double nextDouble() { return Double.parseDouble(next());}
}