Home>

There are two things I want to ask you about this time.

First of all, I don't know why the error occurred.

Next, I am wondering if an unnatural indentation will occur when trying to break a line.

**Error message**

`SyntaxError: invalid syntax`

**Applicable source code**

```
nums = [int (e) for e in input (). split ()] #A, B, X
A, B, X = nums [0], nums [1], nums [2]
N_prices (n) = A * n + B * (len (str (n))
if X<= N_prices (0):
print ('0')
if N_prices (10 ** 9)<= X:
print ('109')
for i in range (1, 10 ** 9):
if X<= N_prices (i) and X<= N_prices (i + 1):
print (str (i))
```

Checked for unnecessary whitespace at the end, but it didn't seem

**Supplemental information (FW/tool version etc.)**

jupyter notebook, python 3.7.3

Trends

The number of parentheses is missing

In addition, that will cause an unintended indentation.