def check(L,M):
    B =list()
    B.append(M[0])
    M.remove(M[0])
    while B[0] != L[B[-1]]:
        B.append(L[B[-1]])
        M.remove(B[-1])
    return M


N,K = map(int,input().split())
l = {i+1:int(j) for i,j in enumerate(input().split())}
m = [i+1 for i in range(N)]
#print(l)
#print(m)
for i in range(1,N+1):
    if l[i] == i:
        m.remove(i)
a = len(m)
while len(m) != 0:
    a -= 1
    m = check(l,m)

if K -a >= 0 and (K-a)%2 == 0:
    print("YES")
else:
    print("NO")