import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int s;
		if(n <= 100){
			s = 2 * n;
			System.out.println(s);
		}else if(n > 100){
			s = 2 * 100 + (n - 100) * 1;
			System.out.println(s);
		}
	}

}
/**************************************************************
	Problem: 1637
	User: admin
	Language: Java
	Result: Accepted
	Time:1023 ms
	Memory:39988 kb
****************************************************************/