#include <bits/stdc++.h>
typedef long long ll;
#define INF 1000000000
#define MOD 1000000007
using namespace std;
bool same(string a,string b){
    if(a==b)return true;
    else return false;
}
bool check(string a,string b){
    string p1=a,p2=a;
    char tmp;
    tmp=p1[0];
    p1[0]=p1[1];
    p1[1]=tmp;
    tmp=p2[0];
    p2[0]=p2[1];
    p2[1]=tmp;
    return p1==b or p2==b;
}
int main(void){
    string before,after;
    cin>>before;
    ll n;
    cin>>n;
    cin>>after;
    int num_x_before=0,num_x_after=0;
    for(int i=0;i<3;i++){
        if(before[i]=='x')num_x_before++;
        if(after[i]=='x')num_x_after++;
    }
    string ans;
    if(num_x_before!=num_x_after){
        ans="SUCCESS";
    }else if(n>=2){
        ans="FAILURE";
    }else if(n==0){
        if(same(after,before)){
            ans="FAILURE";
        }else{
            ans="SUCCESS";
        }
    }else if(n==1){
        if(check(before,after)){
            ans="FAILURE";
        }else{
            ans="SUCCESS";
        }
    }
    cout<<ans<<endl;
}