import java.util.Scanner;
public class Yuki197{
	public static void main(String[] arg){
		Scanner sc = new Scanner(System.in);
		String b,a;
		int n,ob=0,xb=0,oa=0,xa=0;
		b = sc.next();
		n = sc.nextInt();
		a = sc.next();
		for(int i =0;i<3;i++){
			if(b.charAt(i) == 'o'){
				ob++;
			}else{
				xb++;
			}
			if(a.charAt(i) == 'o'){
				oa++;
			}else{
				xa++;
			}
		}
		if(ob != oa){
			System.out.println("SUCCESS");
		}else{
			int posb = 0,posa=0;
			if(n % 2 == 0){
				if(ob == 1){
					for(int i = 0;i<3;i++){
						if(b.charAt(i) == 'o')posb = i;
						if(a.charAt(i) == 'o')posa = i;
					}
					if(Math.abs(posa-posb) % 2 == 0){
						System.out.println("FAILURE");
					}else{
						System.out.println("SUCCESS");
					}
				}else if(ob == 2){
					for(int i = 0;i<3;i++){
						if(b.charAt(i) == 'x')posb = i;
						if(a.charAt(i) == 'x')posa = i;
					}
					if(Math.abs(posa-posb) % 2 == 0){
						System.out.println("FAILURE");
					}else{
						System.out.println("SUCCESS");
					}
				}else{
					System.out.println("FAILURE");
				}
			}else{
				if(ob == 1){
					for(int i = 0;i<3;i++){
						if(b.charAt(i) == 'o')posb = i;
						if(a.charAt(i) == 'o')posa = i;
					}
					if(Math.abs(posa-posb )% 2 == 0){
						System.out.println("SUCCESS");
					}else{
						System.out.println("FAILURE");
					}
				}else if(ob == 2){
					for(int i = 0;i<3;i++){
						if(b.charAt(i) == 'x')posb = i;
						if(a.charAt(i) == 'x')posa = i;
					}
					if(Math.abs(posa-posb) % 2 == 0){
						System.out.println("SUCCESS");
					}else{
						System.out.println("FAILURE");
					}
				}else{
					System.out.println("FAILURE");
				}
			}
		}
	}
}