import sys
input=lambda: sys.stdin.readline().rstrip()
n,k=map(int,input().split())
D=[int(i) for i in input().split()]
P=dict()
for i,d in enumerate(D):
  P[d]=i
ct=0
for i in range(n):
  if D[i]==i+1:
    continue
  else:
    ct+=1
    D[P[i+1]]=D[i]
if ct<=k and ct%2==k%2:
  print("YES")
else:
  print("NO")