#include <cstdio>
#include <iostream>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <string>
#include <vector>
#include <list>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <bitset>
#include <numeric>
#include <limits>
#include <climits>
#include <cfloat>
#include <functional>
using namespace std;

int main()
{
    string init, goal;
    int n;
    cin >> init >> n >> goal;

    set<string> curr;
    curr.insert(init);
    while(--n >= 0){
        set<string> next;
        for(const string& s : curr){
            for(int i=0; i<2; ++i){
                string t = s;
                swap(t[i], t[i+1]);
                next.insert(t);
            }
        }

        if(curr == next)
            break;
        curr.swap(next);
    }

    if(curr.find(goal) == curr.end())
        cout << "SUCCESS" << endl;
    else
        cout << "FAILURE" << endl;

    return 0;
}