eolymp
bolt
Try our new interface for solving problems
Problems

Compact discs

Compact discs

Time limit 1 second
Memory limit 128 MiB

Blank compact discs are on sale in packages of three kinds. A package with 100 disсs costs 100 UAH, one with 20 discs costs 30 UAH, and one disс costs 2 UAH. What minimal sum of money should you pay to buy n such disсs?

Input data

The natural number n (n1000).

Output data

Print the minimal sum to buy n disсs.

.

Examples

Input example #1
123
Output example #1
136