def yourname(N, K, D):
    j = 0
    for i in range(2 * N):
        d = D[j]
        if d == j + 1:
            j += 1
            if j > N - 1:
                break
            continue
        else:
            D[j], D[d - 1] = D[d - 1], D[j]
            K -= 1
    if K >= 0:
        if K % 2 == 0:
            return 'YES'
        else:
            return 'NO'
    else:
        return 'NO'

def main():
    N, K = map(int, input().split())
    D = list(map(int, input().split()))
    print(yourname(N, K, D))

if __name__ == '__main__':
    main()