use std::io::*;
use std::str::FromStr;
use std::cmp::{min, max};

fn read<T: FromStr>() -> T {
    let stdin = stdin();
    let stdin_lock = stdin.lock();
    let s = stdin_lock
        .bytes()
        .map(|c| c.unwrap() as char)
        .skip_while(|c| c.is_whitespace())
        .take_while(|c| !c.is_whitespace())
        .collect::<String>();
    s.parse::<T>().ok().unwrap()
}

fn main() {
    let N = read::<i32>();
    let M = read::<i32>();
    let X = read::<i32>();

    if 3 <= X - (N - M) {
        println!("YES");
    } else {
        println!("NO");
    }
}