fn find_increasing_seq(seq: &[i32]) -> Vec<i32> {
    let mut output = Vec::new();
    if seq.len() < 2 {
        return output;
    }
    output.push(seq[0]);
    for i in 1..seq.len() {
        if seq[i] >= seq[i - 1] {
            output.push(seq[i]);
        } else {
            break;
        }
    }
    output.dedup();
    output
}

fn main() {
    let numbers = vec![1, 2, 3, 4, 4, 5, 9];
    println!("{:?}", find_increasing_seq(&numbers));
}