use std::io::*;

fn main() {
    let mut s: String = String::new();
    std::io::stdin().read_to_string(&mut s).ok();
    let mut itr = s.trim().split_whitespace();

    let s: Vec<char> = itr.next().unwrap().chars().collect();
    let n: usize = itr.next().unwrap().parse().unwrap();
    let t: Vec<char> = itr.next().unwrap().chars().collect();
    if n == 0 {
        let u: String = s.into_iter().collect();
        let v: String = t.into_iter().collect();
        if u == v {
            println!("FAILURE");
        } else {
            println!("SUCCESS");
        }
    } else {
        let a = s
            .iter()
            .fold(0, |acc, x| if *x == 'o' { acc + 1 } else { acc });
        let b = t
            .iter()
            .fold(0, |acc, x| if *x == 'o' { acc + 1 } else { acc });
        if a != b {
            println!("SUCCESS",)
        } else {
            if a == 1 {
                if n == 1
                    && ((s[0] == 'o' && t[2] == 'o')
                        || (s[2] == 'o' && t[0] == 'o')
                        || (s[1] == 'o' && t[1] == 'o'))
                {
                    println!("SUCCESS");
                } else {
                    println!("FAILURE");
                }
            } else if a == 2 {
                if n == 1
                    && ((s[0] == 'x' && t[2] == 'x')
                        || (s[2] == 'x' && t[0] == 'x')
                        || (s[1] == 'x' && t[1] == 'x'))
                {
                    println!("SUCCESS");
                } else {
                    println!("FAILURE");
                }
            } else {
                println!("FAILURE");
            }
        }
    }
}