03. Logistics

package main

import "fmt"

func main() {
    var cargoCount int
    fmt.Scanln(&cargoCount)

    var bus = 0.0
    var truck = 0.0
    var train = 0.0
    var totalCargo = 0.0

    var cargo float64

    for i := 0; i < cargoCount; i++ {
        fmt.Scanln(&cargo)
        if cargo < 4 {
            bus += cargo
        } else if cargo < 12 {
            truck += cargo
        } else {
            train += cargo
        }
        totalCargo += cargo
    }

    var average = (bus * 200 + truck * 175 + train * 120) / totalCargo

    fmt.Printf("%.2f\n", average)
    fmt.Printf("%.2f%%\n", bus / totalCargo * 100)
    fmt.Printf("%.2f%%\n", truck / totalCargo * 100)
    fmt.Printf("%.2f%%\n", train / totalCargo * 100)
}