fn ten_times() {
    for (let i = 0; i < 10; i += 1) {
    }
}

fn twenty_times() {
    let i = 0;
    loop {
        if not (i < 20) {
            break;
        }
        i += 1;
    }
}


fn main() {
    loop {
        ten_times();
        twenty_times();
    }
}