P1003 ticket prices

Title Description

Known a children's movie fare is 10 yuan, ask \ (n \) total fare little friend is how much?

Input Format

Enter an integer \ (n-(. 1 \ n-Le \ Le 1000) \) , for indicating the number of children.

Output Format

Output a integer representing \ (n-\) total fare bits of children.

Sample input

5

Sample Output

50