#![allow(dead_code, deprecated, unused_variables, unused_mut)]
fn read_be_i8(input: &mut &[u8]) -> i8 {
    let (int_bytes, rest) = input.split_at(size_of::<i8>());
    *input = rest;
    i8::from_be_bytes(int_bytes.try_into().unwrap())
}
fn main() {}