mod = 1000000007
eps = 10**-9


def main():
    import sys
    input = sys.stdin.readline

    N, K = map(int, input().split())
    A = [0] + list(map(int, input().split()))

    seen = [0] * (N+1)
    M = 0
    for i in range(1, N+1):
        if seen[i]:
            continue
        p = A[i]
        cnt = 0
        seen[i] = 1
        while True:
            cnt += 1
            if p != i:
                seen[p] = 1
                p = A[p]
            else:
                break
        M += cnt - 1
    if M > K:
        print("NO")
    else:
        if (K - M) & 1:
            print("NO")
        else:
            print("YES")
            

if __name__ == '__main__':
    main()