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

D = list(map(lambda x: int(x) - 1, input().split()))

I = [0] * N

ans = 0
for i in range(N):
    I[D[i]] = i
    
for i in range(N):
    
    if D[i] != i:
        D[I[i]] = D[i]
        I[D[i]] = I[i]
        ans += 1
if ans <= K and (K - ans) % 2 == 0:
    print('YES')
else:
    print('NO')