#include <stdio.h>

int main()
{

    char sex, F, M, Y, N;

    float fatherHeight, motherHeight, H;

    char sport, food;

    scanf("%c", &sex);

    scanf("%f %f", &fatherHeight, &motherHeight);

    getchar();//读走前面输入的回车

    scanf("%c", &sport);

    getchar();//同理

    scanf("%c", &food);

    if (sex == 'M')
    {
        H = (fatherHeight + motherHeight) * (0.54);
    }

    if (sex == 'F')
    {
        H = (fatherHeight * (0.923) + motherHeight) / 2;
    }

    if (sport == 'Y')
    {
        H *= (1.02);
    }

    if (food == 'Y')
    {
        H *= (1.015);
    }

    printf("%f", H);

    return 0;
}