I am getting correct output for A = 100 and B = 1 on my system’s Python and IntBit’s iDE is giving output 0 0 for the following code with same input, A = 100, B = 1

def uniquePaths(self, A, B):

a = [[0] * A] * B

```
for i in range(len(a)):
for j in range(len(a[i])):
if i == 0 or j == 0:
a[i][j] = 1
else:
a[i][j] = a[i-1][j] + a[i][j-1]
m = len(a) -1
n = len(a[len(a)-1])-1
return a[m][n]
```