#include <cstdio>
#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <string>
#include <cstring>
#include <sstream>
#include <algorithm>
#include <functional>
#include <queue>
#include <stack>
#include <cmath>
#include <iomanip>
#include <list>
using namespace std;
inline int toInt(string s) { int v; istringstream sin(s); sin >> v; return v; }
template<class T> inline string toString(T x) { ostringstream sout; sout << x; return sout.str(); }
template<class T> inline T sqr(T x) { return x*x; }
typedef pair<int, int> P;
typedef long long ll;
typedef unsigned long long ull;

#define For(i,a,b)	for(int (i) = (a);i < (b);(i)++)
#define rep(i,n)	For(i,0,n)
#define clr(a)		memset((a), 0 ,sizeof(a))
#define mclr(a)		memset((a), -1 ,sizeof(a))
#define all(a)		(a).begin(),(a).end()
#define rall(a)		(a).rbegin(), (a).rend()
#define sz(a)		(sizeof(a))
#define Fill(a,v)	fill((int*)a,(int*)(a+(sz(a)/sz(*(a)))),v)

bool cheak(int x, int y, int xMax, int yMax){ return x >= 0 && y >= 0 && xMax > x && yMax > y; }
const int dx[9] = { -1, -1, -1, 0 , 0 , 0 , 1 , 1 , 1}, dy[9] = { -1, 0, 1 ,-1 , 0 , 1, -1 , 0,  1};
const int mod = 1000000007;
const int INF = 1e9;

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

	if (!n){
		if (s1 == s2){
			cout << "FAILURE" << endl; return 0;
		}
		else{
			cout << "SUCCESS" << endl; return 0;
		}
	}
	int sum1 = 0,sum2 = 0;
	rep(i, s1.size())if (s1[i] == 'o')sum1++;
	rep(i, s2.size())if (s2[i] == 'o')sum2++;

	if (sum1 != sum2){
		cout << "SUCCESS" << endl; return 0;
	}
	if (n == 1){
		int x;
		if (sum1 == 2){
			rep(i, s1.size())if (s1[i] == 'x')x = i;
			if ((x == 0 && s2[2] == 'x') || (x == 2 && s2[0] == 'x')){
				cout << "SUCCESS" << endl; return 0;
			}
		}
		if (sum1 == 1){
			rep(i, s1.size())if (s1[i] == 'o')x = i;
			if ((x == 0 && s2[2] == 'o') || (x == 2 && s2[0] == 'o')){
				cout << "SUCCESS" << endl; return 0;
			}
		}

		if (sum1 == 1 || sum2 == 2){
			if (x == 1){
				if (s1 == s2){
					cout << "SUCCESS" << endl; return 0;
				}
			}
		}
	}

	cout << "FAILURE" << endl;

	return 0;
}