Beginner · Lists · 105 of 264

Find a number

Find where a number first appears in a list. Positions start at 0.

Input: whole numbers on one line, then the number to find on the next line. Output: found at <position>, or not found

Examples

Input

4 8 15 16 23 42
15

Output

found at 2

Input

1 2 3
7

Output

not found

Input

5 5 5
5

Output

found at 0

One more test checks other inputs when you press Check.

Stuck? The idea behind lists

A list keeps several values in order: [3, 9, 1]. Its items are numbered from 0, like a string's characters.

append() adds to the end; sum(), min(), max(), len() and sorted() work on a whole list. Read numbers from one line with input().split() and int().

numbers = [int(x) for x in input().split()]
print(sum(numbers), max(numbers))
numbers.append(0)
print(numbers)

Watch for: split() gives text: "10" sorts before "9". Turn each item into a number before comparing or adding.