#include <iostream>
#include <cstdio>
#include <string>

using namespace std;

int main() {
	long long n;
	string s1, s2;

	cin >> s1 >> n >> s2;


	int n1 = 0, n2 = 0;
	for (int i = 0; i < s1.size(); i++) {
		if (s1[i] == 'o') {
			n1++;
		}
		if (s2[i] == 'o') {
			n2++;
		}
	}

	if (n1 != n2) {
		cout << "SUCCESS" << endl;
		return 0;
	}

	if (n >= 3) {
		cout << "FAILURE" << endl;
		return 0;
	}

	for (int i = 0; i < 8; i++) {
		auto ss = s1;
		if(n > 0) { swap(ss[(i & 1) ? 0 : 2], ss[1]); }
		if(n > 1) { swap(ss[(i & 2) ? 0 : 2], ss[1]); }
		if(n > 2) { swap(ss[(i & 4) ? 0 : 2], ss[1]); }

		if (ss == s2) {
			cout << "FAILURE" << endl;
			return 0;
		}
	}

	cout << "SUCCESS" << endl;
	return 0;
}