# -*- coding: utf-8 -*-

N,K = map(int, input().split())
D = list(map(int, input().split()))

total = 0
for i in range(N):
    if D[i] != i+1:
        # D[i]とD[D[i]-1]を交換
        temp = D[i]
        D[i] = D[temp-1]
        D[temp-1] = temp
        total += 1

if total<=K and (K-total)%2==0:
    print('YES')
else:
    print('NO')