Print Digits Before First Period

Source: Phước Hưng OJ

Version: Phuoc Hung OJ Extended

Problem Statement

Read until the first period .. Print only ASCII digits 0 through 9 occurring before that period, concatenated in their original order, then print exactly one LF. Ignore the period and the entire suffix. If there is no preceding digit, print only LF.

Input

An ASCII stream of 1..100000 bytes containing at least one period; it may contain LF, spaces, and other characters.

Output

Digits before the first period, including any leading zeroes, followed by LF.

Subtasks

• Subtask 1 (20%): 1..30 ASCII bytes, at least one period.

• Subtask 2 (30%): 1..1000 ASCII bytes, at least one period.

• Subtask 3 (50%): 1..100000 ASCII bytes, at least one period.

Examples

Example 1

Input:

A0b12.9Z

Output:

012

Explanation:

Read to first period; retain only preceding digit characters in their original order. Exact input: "A0b12.9Z"; exact output: "012\n".

Example 2

Input:

abc.123

Output:

Explanation:

Read to first period; retain only preceding digit characters in their original order. Exact input: "abc.123"; exact output: "\n".

Example 3

Input:

.987

Output:

Explanation:

Read to first period; retain only preceding digit characters in their original order. Exact input: ".987"; exact output: "\n".

Example 4

Input:

1
2.34

Output:

12

Explanation:

Read to first period; retain only preceding digit characters in their original order. Exact input: "1\n2.34"; exact output: "12\n".

Note on displayed bytes: \n denotes an actual LF, \t an actual tab and \r an actual CR. The JSON-style Input renderings in explanations are diagnostic only, not extra input characters.