n, k = [int(i) for i in input().split()] d = [int(i) - 1 for i in input().split()] e = [0 for i in range(n)] for i, d_i in enumerate(d): e[d_i] = i used_indices = set() swap_times = list() for i in range(n): index = i swap_time = -1 while index not in used_indices: used_indices.add(index) index = e[index] swap_time += 1 if swap_time > 0: swap_times.append(swap_time) total_swap_time = sum(swap_times) if (k - total_swap_time) % 2 == 0 and k > total_swap_time: print('YES') else: print('NO')