fn main() {
    let mut xx = String::new();
    std::io::stdin().read_line(&mut xx).ok();
    let xx: Vec<u64> = xx.split_whitespace().flat_map(str::parse).collect();

    match xx[1] - xx[0] + 1 {
        n if n >= xx[2] => println!("{}", xx[2]),
        n => println!("{}", n),
    }
}