Sum Digits Before First Period

Source: Phước Hưng OJ

Version: Phuoc Hung OJ Extended

Problem Statement

Read ASCII bytes until the first . or EOF, whichever comes first. Sum the numeric values 0..9 of all digit characters read before stopping. Ignore other characters, including spaces and LF. Return zero if no digit occurs. A period need not appear.

Input

An ASCII stream of 0..100000 bytes; a period may be absent.

Output

Print the sum of digit values followed by LF.

Subtasks

• Subtask 1 (20%): ASCII stream length 0..100 bytes.

• Subtask 2 (30%): ASCII stream length 0..2000 bytes.

• Subtask 3 (50%): ASCII stream length 0..100000 bytes.

Examples

Example 1

Input:

a3 b7.90

Output:

10

Explanation:

Add digit values up to the first period or EOF. Exact input: "a3 b7.90"; exact output: "10\n".

Example 2

Input:

abc

Output:

0

Explanation:

Add digit values up to the first period or EOF. Exact input: "abc"; exact output: "0\n".

Example 3

Input:

1
2.34

Output:

3

Explanation:

Add digit values up to the first period or EOF. Exact input: "1\n2.34"; exact output: "3\n".

Example 4

Input:

Output:

0

Explanation:

Add digit values up to the first period or EOF. Exact input: ""; exact output: "0\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.