n,k=map(int,input().split())
d=list(map(lambda x: x-1, map(int,input().split())))
dif=False
cnt=0
for i in range(n):
    j = d[i]
    if d[i] != j and d[j] != i:
        dif = True
    if i == j: continue
    cnt+=1
    d[j] = d[i]
if dif and k > cnt:
    print("YES")
else:
    print("YES" if cnt == k or (k>cnt and (k-cnt)&1==0) else "NO")