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

int main() {
    string s,t;
    int n;
    cin>>s>>n>>t;
    if (n==0) {
        if (s!=t) puts("SUCCESS");
        else puts("FAILURE");
        return 0;
    }
    int sc,tc;
    sc=tc=0;
    for (char c:s) sc+=c=='o';
    for (char c:t) tc+=c=='o';
    if (sc!=tc) {
        puts("SUCCESS");
        return 0;
    }
    if (sc==0||sc==3) {
        puts("FAILURE");
        return 0;
    }
    if (n==1) {
        if (sc==1) {
            if (s[0]=='o'&&t[2]=='o'||s[2]=='o'&&t[0]=='o') {
                puts("SUCCESS");
            } else {
                puts("FAILURE");
            }
        } else {
            if (s=="oox"&&t=="xoo"||s=="xoo"&&t=="oox") {
                puts("SUCCESS");
            } else {
                puts("FAILURE");
            }
        }
        return 0;
    }
    puts("FAILURE");
    return 0;
}