#include <stdio.h>
#include <string.h>

int x, nr;
char s[50];
double proc[] = {0, 10, 15, 25, 28, 33, 35, 39.6, 39.6};
int val1[] = {0, 9075, 36900, 89350, 186350, 405100, 406750, 999999};
int val2[] = {0, 18150, 73800, 148850, 226850, 405100, 457600, 999999};
int val3[] = {0, 12950, 49400, 127550, 206600, 405100, 432200, 999999};
int val4[] = {0, 9075, 36900, 74425, 113425, 202550, 228800, 999999};

void sol (int val[])
{
	int i;
	for (i = 1; i <= 7; i ++)
		if (val[i] >= x)
		{
			long long y = x * proc[i] * 1000;
			x = y / 100000;
			printf ("%d", x);
			return;
		}
}

int main ()
{
#ifndef ONLINE_JUDGE
	freopen ("mind2.in", "r", stdin);
	freopen ("mind2.out", "w", stdout);
#endif
	gets (s + 1);
	if (s[2] == 'i')
		nr = 1;
	if (s[2] == 'u')
		nr = 2;
	if (s[2] == 'e')
		nr = 3;
	if (s[2] == 'a')
		if (s[9] == 'f')
			nr = 4;
		else
			nr = 2;
	scanf ("%d", &x);
	if (nr == 1)
		sol (val1);
	if (nr == 2)
		sol (val2);
	if (nr == 3)
		sol (val3);
	if (nr == 4)
		sol (val4);
	return 0;
}