Novice · Arithmetic · 30 of 264

Change

A shop sells something for a price; the customer pays with a larger note. Print the change.

Input: the price and the amount paid, whole numbers, one per line. Output: Change: <paid - price>

Examples

Input

35
50

Output

Change: 15

Input

99
100

Output

Change: 1

Input

0
20

Output

Change: 20

One more test checks other inputs when you press Check.

Stuck? The idea behind arithmetic

input() always gives text: turn it into a whole number with int() or a decimal with float() before doing sums.

+ - * / work as in maths; / always gives a decimal. // divides and drops the remainder, % gives the remainder, ** raises to a power.

a = int(input())
b = int(input())
print(a + b)
print(a // b, a % b)

Watch for: "5" + "3" is "53", not 8: if a sum joins numbers together, an int() is missing.