Challenge: Safe Divider

Lab Python Beginner 10 points

Read two lines and divide the first number by the second. Never crash:

If either line isn't a whole number, print Invalid number.
If the second number is 0, print Cannot divide by zero.
Otherwise print the answer rounded to 2 decimal places.

Input

Two lines.

Output

One line: the answer or one of the messages above.

Example

Input

10
4

Output

2.5

Sample input available Sample output available

Editor

Python

Hints

Read both lines first, then convert them inside try.

Use one except for ValueError and one for ZeroDivisionError.

Solution explanation

We read both lines first, so the input is always fully read. Both int() calls and the division sit in the try block, so any of them can fail and be caught by the matching except.

Show solution

first = input()
second = input()
try:
    a = int(first)
    b = int(second)
    print(round(a / b, 2))
except ValueError:
    print("Invalid number")
except ZeroDivisionError:
    print("Cannot divide by zero")

Output

Answer