#![allow(dead_code, deprecated, unused_variables, unused_mut)]
use std::ops::Rem;
#[derive(PartialEq, Debug)]
struct SplitSlice<'a, T> {
    slice: &'a [T],
}
impl<'a, T> Rem<usize> for SplitSlice<'a, T> {
    type Output = Self;
    fn rem(self, modulus: usize) -> Self::Output {
        let len = self.slice.len();
        let rem = len % modulus;
        let start = len - rem;
        Self {
            slice: &self.slice[start..],
        }
    }
}
fn main() {
    assert_eq!(
        SplitSlice { slice : & [0, 1, 2, 3, 4, 5, 6, 7] } % 3, SplitSlice { slice : & [6,
        7] }
    );
}