# -*- coding: utf-8 -*-
"""
No.482 あなたの名は
https://yukicoder.me/problems/no/482

"""
import sys
from sys import stdin
input = stdin.readline


def solve(N, K, D):
    num2pos = dict()            # 数字がリストのどこにあるか検索するための辞書
    D.insert(0, 0)
    for i, d in enumerate(D):
        num2pos[d] = i

    for i in range(1, N+1):
        if D[i] != i:
            K -= 1              # 能力を1回使って魂を入れ替え
            target_pos = num2pos[i]
            num2pos[D[i]] = target_pos
            num2pos[i] = i
            D[target_pos], D[i] = D[i], D[target_pos]

    if K < 0 or K % 2 != 0:
        return 'NO'
    return 'YES'


def main(args):
    N, K = map(int, input().split())
    D = [int(x) for x in input().split()]
    ans = solve(N, K, D)
    print(ans)


if __name__ == '__main__':
    main(sys.argv[1:])