#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#[allow(dead_code)]
fn divide_by_three(x: u32) -> u32 {
    for i in 0.. {
        if 3 * i < i {
            panic!("u32 overflow");
        }
        if x < 3 * i {
            return i - 1;
        }
    }
    unreachable!("The loop should always return");
}
fn main() {}