#include <bits/stdc++.h>
using namespace std;
#define REP(i, n)           for(int(i)=0;(i)<(n);++(i))

int main(){
    string s,d; int n;
    cin >> s >> n >> d;

    cout << [&]()->string{
        string ss = s, dd = d;
        sort(ss.begin(), ss.end());
        sort(dd.begin(), dd.end());
        if(ss != dd) return "SUCCESS";
        if(s == "ooo" || s == "xxx") return "FAILURE";
        if(n == 0) return (s != d) ? "SUCCESS" : "FAILURE";

        int si = 0, di = 0;
        if(ss == "oxx"){
            REP(i,3) if(s[i]=='o') si = i;
            REP(i,3) if(d[i]=='o') di = i;
        } else {
            REP(i,3) if(s[i]=='x') si = i;
            REP(i,3) if(d[i]=='x') di = i;
        }
        if(n == 1 && si == 1 && di == 1) return "SUCCESS";
        if(abs(si-di) > n) return "SUCCESS";
        return "FAILURE";
    }() << endl;
}