Tourist Shop

package main

import "fmt"

func main() {
    var budget, price, totalSum float64
    fmt.Scanln(&budget)

    counter := 0

    var product string
    fmt.Scanln(&product)

    for product != "Stop" {
        fmt.Scanln(&price)
        counter++
        if counter % 3 == 0 {
            price /= 2
        }
        totalSum += price
        if budget < totalSum {
            break
        }
        fmt.Scanln(&product)
    }

    if product == "Stop" {
        fmt.Printf("You bought %d products for %.2f leva.\n", counter, totalSum)
    } else {
        fmt.Printf("You don't have enough money!\nYou need %.2f leva!\n", totalSum - budget)
    }
}