#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;
using ll = long long;

int main() {
    string s, t;
    int n;
    cin >> s >> n >> t;

    if (s == t)cout << "FAILURE" << endl;
    else if (n == 0) cout << "SUCCESS" << endl;
    else {
        int a = 0, b = 0;
        for (auto c:s) {
            if (c == 'o')a++;
        }
        for (auto c:t) {
            if (c == 'o')b++;
        }
        if (a != b) cout << "SUCCESS" << endl;
        else if (n == 1 && s[1] == t[1] && ((s[0] != t[0]) == (s[2] != t[2]))) cout << "SUCCESS" << endl;
        else cout << "FAILURE" << endl;
    }
    return 0;
}