here is my python code:----
a=input()
n=len(a)
A = [1000000007 for i in range(n)]
A[0] = 0
for i in range(n-1):
for j in range(i+1,n):
if j == i+1 or a[j] == a[i]:
A[j] = min(A[i]+1, A[j])
A[j-1] = min(A[j]+1, A[j-1])
print(A[n-1])
Please suggest me what’s wrong with my code