fn number_line_jumps(x1: i32, v1: i32, x2: i32, v2: i32) -> String {
    //Time complexity: O(1)
    //Space complexity (ignoring input): O(1)
    if x1 == x2 {
        return "YES".to_string();
    }
    if v1 == v2 {
        return "NO".to_string();
    }

    let relative_speed = v2 - v1;
    let initial_distance = x1 - x2;
    let jumps = initial_distance as f32 / relative_speed as f32;
    if jumps == jumps.abs().floor() {
        return "YES".to_string();
    }

    "NO".to_string()
}