#include<iostream>
using namespace std;

int main(){
    string before, after, result;
    int n;
    cin >> before >> n >> after;

    int bo = 0, ao = 0, ax = 0, bx = 0;
    for(int i = 0; i < 3; i++){
        if(before[i] == 'o')    bo++;
        else                    bx++;
        if(after[i] == 'o')     ao++;
        else                    ax++;
    }

    if(before == after){
        result = "FAILURE";
    }else if(bo == ao && bx == ax){
        string s;
        if(bo == 1){
            s = "o";
        }else if(bx == 1){
            s = "x";
        }

        int bef = before.find(s);
        int aft = after.find(s);
        int diff = abs(bef-aft);

        if((diff == 0 && n == 1) || (diff == 1 && n == 0)){
            result = "SUCCESS";
        }else{
            result = "FAILURE";
        }
    }else{
        result = "SUCCESS";
    }

    cout << result << endl;
    return 0;
}