n,k=map(int,input().split())
d=list(map(lambda x: x-1, map(int,input().split())))

dif=False
for i in range(n-1):
    if d[i] == i: continue
    for j in range(i+1,n):
        if d[j] == j or j == d[i]: continue
        if d[j] != i:
            dif = True
            break
    if dif: break

cnt=0
for i in range(n):
    if d[i] == i: continue
    if d[d[i]] == i:
        cnt+=1
        d[d[i]] = d[i]
        d[i] = i
    else:
        cnt+=1

if dif and k >= cnt:
    print("YES")
else:
    print("YES" if cnt == k or (k>cnt and (k-cnt)&1==0) else "NO")