#include<iostream>
#include<cstdio>
using namespace std;
int main(){
    int m,n;
    double sum;
    cin>>m>>n;
    cout<<"Total: R$ ";
    switch(m){
        case 1:
        sum=4.0*n;
        break;
        case 2:
        sum=4.5*n;
        break;
        case 3:
        sum=5.0*n;
        break;
        case 4:
        sum=2.0*n;
        break;
        default:
        sum=1.5*n;
        break;
    }
     printf("%.2lf",sum);
       return 0;
}

不熟悉switch语句，所以用switch写