#include <stdio.h>
int main()
{
	long int i;
	int bonus1,bonus2,bonus4,bonus6,bonus10,bonus; 
	scanf("%ld",&i);

 
		bonus1 = 100000 * 0.1;
		bonus2 = bonus1 + 100000 * 0.075;
		bonus4 = bonus2 + 200000 * 0.05;
		bonus6 = bonus4 + 200000 * 0.03;
		bonus10 = bonus6 + 400000 * 0.015;
		if(i <= 100000)
		{
			bonus = i * 0.1;
		} 
		else if(i <= 200000)
		{
			bonus = bonus1 + (i - 100000) * 0.075;
		}
		else if(i <= 400000)
		{
			bonus = bonus2 + (i - 200000) * 0.05;
		}
		else if(i <= 600000)
		{
			bonus = bonus4 + (i - 400000) * 0.03;
		}
		else if(i <= 1000000)
		{
			bonus = bonus6 + (i - 600000) * 0.015;
		}
		else if(i > 1000000)
		{
			bonus = bonus10 + (i - 1000000) * 0.01;
		}
		printf("%d",bonus);

	return 0;
}