#include <iostream>
#include <vector>
#include <string>
using namespace std;

int main() {
	string s1, s2;
	int n;
	cin >> s1 >> n >> s2;

	vector<int> m1, b1, m2, b2;
	for(int i = 0; i < 3; i++) {
		if(s1[i] == 'o') m1.push_back(i);
		else b1.push_back(i);
		if(s2[i] == 'o') m2.push_back(i);
		else b2.push_back(i);
	}

	if(m1.size() != m2.size()) {
		cout << "SUCCESS" << endl;
		return 0;
	}
	if(m1.size() == 3 || b1.size() == 3) {
		cout << "FAILURE" << endl;
		return 0;
	}

	if(m1.size() == 1) {
		if(abs(m1[0] - m2[0]) == 0 && n % 2 == 0 ||
			abs(m1[0] - m2[0]) == 1 && n % 2 == 1 ||
			abs(m1[0] - m2[0]) == 2 && n % 2 == 0 && n >= 2) {
			cout << "FAILURE" << endl;
			return 0;
		}
		else {
			cout << "SUCCESS" << endl;
			return 0;
		}
	}
	else {
		if(abs(b1[0] - b2[0]) == 0 && n % 2 == 0 ||
			abs(b1[0] - b2[0]) == 1 && n % 2 == 1 ||
			abs(b1[0] - b2[0]) == 2 && n % 2 == 0 && n >= 2) {
			cout << "FAILURE" << endl;
			return 0;
		}
		else {
			cout << "SUCCESS" << endl;
			return 0;
		}
	}
}