snack

#include<stdio.h>
int main()
{
    long long int X,Y;
    double total;
    scanf("%lld %lld",&X,&Y);
    if(X==1)
        total=Y*4.00;
    else if(X==2)
        total=Y*4.50;
    else if(X==3)
        total=Y*5.00;
    else if(X==4)
        total=Y*2.00;
    else if(X==5)
        total=Y*1.50;
    printf("Total: R$ %.2lf\n",total);
    return 0;
}