'Python 3.9' Solution:

 # Making a list compare_arr to incorporate the changes in the initial array and compare the units of displacement

 n=len(q)
compare_arr=[i+1 for i in range(n)]
count=0
chaotic=0
for i in range(n-1):
    if q[i]==compare_arr[i]:
        continue
    elif q[i]==compare_arr[i+1]:
        compare_arr[i], compare_arr[i+1]= compare_arr[i+1], compare_arr[i]
        count+=1
    elif q[i]==compare_arr[i+2]:
        compare_arr[i], compare_arr[i+2]= compare_arr[i+2], compare_arr[i]
        compare_arr[i+2], compare_arr[i+1]= compare_arr[i+1], compare_arr[i+2]
        count+=2
    else:
        chaotic=1
        break
if chaotic==1:
    print('Too chaotic')
else:
    print(count)