import java.util.Scanner;

class Main{
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        int n,t[]=new int[2],f=0;
        String s[]=new String[2];
        s[0]=sc.next();
        n=sc.nextInt();
        s[1]=sc.next();
        sc.close();
        for(int i=0;i<2;++i)for(int j=0;j<3;++j)if(s[i].charAt(j)=='o')++t[i];
        if(t[0]!=t[1])f=1;
        else if(2>n&&(n>0&&(s[0].equals("oxo")&&s[1].equals("oxo")||s[0].equals("xox")&&s[1].equals("xox"))||s[0].equals("oox")&&s[1].equals("xoo")||s[0].equals("xoo")&&s[1].equals("oox")||s[0].equals("oxx")&&s[1].equals("xxo")||s[0].equals("xxo")&&s[1].equals("oxx")))f=1;
        else if(1>n&&s[0].equals(s[1]))f=1;
        System.out.print(f>0?"SUCCESS":"FAILURE");
    }
}