#![allow(
    dead_code,
    non_snake_case,
    unused_imports,
    unused_mut,
    unused_variables,
    while_true,
    unused_assignments,
    clippy::needless_range_loop,
    clippy::ptr_arg,
    clippy::type_complexity,
    clippy::unnecessary_cast
)]
use proconio::{
    input,
    marker::{Chars, Usize1 as usize1},
};
use std::collections::{BinaryHeap, HashMap, HashSet, VecDeque};

fn main() {
    input! {
        N: usize,
        K: usize,
        S: [Chars; N],
        T: [Chars; N],
    };

    let mut S_sets = vec![vec![]; K];
    let mut T_sets = vec![vec![]; K];

    for (i, s) in S.iter().cloned().enumerate() {
        S_sets[i % K].push(s);
    }
    for (i, s) in T.iter().cloned().enumerate() {
        T_sets[i % K].push(s);
    }

    let mut ok = true;

    for i in 0..K {
        let mut ss = S_sets[i].clone();
        let mut ts = T_sets[i].clone();
        ss.sort();
        ts.sort();
        if ss != ts {
            ok = false;
            break;
        }
    }

    println!("{}", if ok { "Yes" } else { "No" });
}