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

memo = [-1]*N

for i, d in enumerate(D):
    memo[d] = i

cnt = 0
# 前から見る
for i, m in enumerate(memo):
    if i != m:
        cnt += 1
        partner = D[i]
        D[i], D[m] = D[m], D[i]
        memo[partner] = m

if cnt > K:
    print('NO')
elif cnt == K:
    print('YES')
else:
    nokori = K - cnt
    if nokori%2 == 0:
        print('YES')
    else:
        print('NO')