import java.util.Scanner;
public class Yuki197{
	public static void main(String[] arg){
		Scanner sc = new Scanner(System.in);
		String be,af;
		int n,bo=0,ao=0,posb=0,posa=0;
		be = sc.next();
		n = sc.nextInt();
		af = sc.next();
		if(n == 0){
			if(be == af){
				System.out.println("FAILURE");
			}else{
				System.out.println("SUCCESS");
			}
		}else if(n == 1){
			for(int i = 0;i<3;i++){
				if(be.charAt(i) == 'o')bo++;
				if(af.charAt(i) =='o')ao++;
			}
			if(ao != bo){
				System.out.println("SUCCESS");
			}else{
				if(ao == 1){
					for(int i = 0;i<3;i++){
						if(be.charAt(i) == 'o')posb = i;
						if(af.charAt(i) == 'o')posa = i;
					}
					if(posb+posa != 2){
						System.out.println("FAILURE");
					}else{
						System.out.println("SUCCESS");
					}
				}else if(ao == 2){
					for(int i = 0;i<3;i++){
						if(be.charAt(i) != 'o')posb = i;
						if(af.charAt(i) != 'o')posa = i;
					}
					if(posb+posa != 2){
						System.out.println("FAILURE");
					}else{
						System.out.println("SUCCESS");
					}
				}else{
					System.out.println("FAILURE");
				}
			}
		}else{
			System.out.println("FAILURE");
		}
	}
}