URI -1038 with C++

#include<iostream>

using namespace std;

int main()
{
    int x;
    float y,sum=0;
    cin>>x>>y;
    if(x==1)
        sum = 4.00 * y;
    if(x==2)
        sum = 4.50 * y;
    if(x==3)
        sum = 5.00 * y;
    if(x==4)
        sum = 2.00 * y;
    if(x==5)
        sum = 1.50 * y;

   cout.precision(2);
    cout<<"Total: R$ "<<fixed<<sum<<endl;
}