Comma Separated Sum

Time limit1sMemory limit256 MB

Summary

Add all the natural numbers listed in the comma-separated string S.

Level: Easy2 of 10
Topics: String, Math
Solved: No attempts yet

Problem

A string $S$ made up only of digits and commas is given. $S$ lists natural numbers in order, separated by single commas. Find the sum of all natural numbers written in $S$ .

Input

The first line contains the string $S$ . The length of $S$ is at most 100, and $S$ consists only of digits and commas. Each natural number written in $S$ is at most 1,000,000.

Output

Print the sum of the natural numbers written in $S$ on the first line.

Examples3

Example 1
Input
```
10,20,30,50,100
```
Expected output
```
210
```
Example 2
Input
```
1
```
Expected output
```
1
```
Example 3
Input
```
1,2,3
```
Expected output
```
6
```