n, k = map(int, input().split()) D = list(map(int, input().split())) a = [] for d in D: a.append(d-1) cnt = 0 for i in range(k): while a[i] != i: t = a[i] a[i] = a[t] a[t] = t cnt += 1 if cnt % 2 == k % 2: print("YES") else: print("NO")