#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 <= 2; i++) {
		if (s1[i] == 'o') {
			n1++;
		}
		if (s2[i] == 'o') {
			n2++;
		}
	}

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

	bool ret = false;
	if (n == 0) {
		if (s1 != s2) {
			ret = true;
		}
	} else if (n == 1 && n1 > 0 && n2 > 0) {
		char c = n1 == 1 ? 'o' : 'x';
		int idx1 = 0, idx2 = 0;
		for (int i = 0; i < 2; i++) {
			if (s1[i] == c) {
				idx1 = i;
			}
			if (s2[i] == c) {
				idx2 = i;
			}
		}

		if (abs(idx1 - idx2) <= n) {
			ret = true;
		}
	}

	cout << (ret ? "SUCCESS" : "FAILURE") << endl;
	return 0;
}