import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

# あ、隣接じゃない

N,K,*D = map(int,read().split())

visited = [0] * (N+1)

cycle = 0
for n in range(1,N+1):
    if not visited[n]:
        cycle += 1
    while True:
        n = D[n-1]
        if visited[n]:
            break
        visited[n] = 1

x = N - cycle

answer = 'YES' if (K>=x) and ((K-x)%2 == 0) else 'NO'
print(answer)