


#include<stdio.h>
int main()
{
int a,b;
char c;
float g;
scanf("%d %d %c",&a,&b,&c);
if(c=='m')
{
if(b==90)
g=a0.956.95;
else if(b==93)
g=a0.957.44;
else if(b==97)
g=a0.957.93;
}
else
{
if(b==90)
g=0.97a6.95;
else if(b==93)
g=0.97a7.44;
else if(b==97)
g=0.97a7.93;
}
printf("%.2f",g);
return 0;
}

