#[allow(unused_imports)]
use std::cmp::*;
#[allow(unused_imports)]
use std::collections::*;

fn read<T: std::str::FromStr>() -> T {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    s.trim().parse().ok().unwrap()
}

fn read_vec<T: std::str::FromStr>() -> Vec<T> {
    read::<String>()
        .split_whitespace()
        .map(|e| e.parse().ok().unwrap())
        .collect()
}

fn main() {
    let n: usize = read();
    let mut a: Vec<u64> = read_vec();
    a.sort();
    let mut mountains = Vec::new();
    mountains.push(1);
    for i in 1..n {
        if a[i] == a[i - 1] + 1 {
            let last_elem = mountains.len() - 1;
            mountains[last_elem] += 1;
        } else {
            mountains.push(1);
        }
    }
    let max_elem = *mountains.iter().max().unwrap();
    let mut mem = vec![-1; max_elem + 1];
    mem[0] = 0;
    mem[1] = 1;
    // println!("{:?}", mountains);
    // println!("{:?}", mem);
    for m in 2..max_elem + 1 {
        let mut s = BTreeSet::new();
        s.insert(mem[m - 2]);
        if m > 2 {
            for i in 0..m - 3 + 1 {
                s.insert(mem[i] ^ mem[m - i - 3]);
            }
        }
        let mut res = 0;
        while s.contains(&res) {
            res += 1;
        }
        mem[m] = res;
    }
    let result = mountains.iter().fold(0, |s, &x| s ^ mem[x]);
    if result == 0 {
        println!("Second");
    } else {
        println!("First");
    }
}