fn main() {
    let mut xx = String::new();
    std::io::stdin().read_line(&mut xx).ok();
    let xx: Vec<i64> = xx.split_whitespace().flat_map(str::parse).collect();

    if xx[2] * xx[1] >= xx[0].abs() {
        println!("Yes");
    } else {
        println!("No");
    }
}