#include <bits/stdc++.h>
using namespace std;

int main() {
  string S, T, ans = "FAILURE", suc = "SUCCESS", s;
  int N;
  cin >> S >> N >> T;
  if (count(S.begin(), S.end(), 'o') != count(T.begin(), T.end(), 'o')) ans = suc;
  else if (N == 0 && S != T) ans = suc;
  else if (N == 1) {
    s = S;
    swap(S.at(0), S.at(1)), swap(s.at(1), s.at(2));
    if (S != T && s != T) ans = suc;
  }
  cout << ans << "\n";
}