Go Language. Map Exercise

Based on the list of dungeon raids, find the top player in the guild 🙂 

Example of input:

15
Stockade Shtukensia
Stockade Shtukensia
Stockade Shtukensia
Stockade Lucifer
Gnomeregan Shtukensia
Stockade Shtukensia
Deadmines Igroglaz
Stockade Pingi
Deadmines Pingi
Gnomeregan Terter
Gnomeregan Lucifer
Deadmines Terter
Stockade Terter
Deadmines Igroglaz
Gnomeregan Lucifer

Output should be:

Shtukensia : 1.00
Pingi : 1.00
Lucifer : 1.00
Lucifer : 1.00
Lucifer : 1.00

Top players:
Shtukensia

Code:

package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

func getNum(r *bufio.Reader) int {
	input, _ := r.ReadString('\n')

	input = strings.TrimSpace(input)

	n, _ := strconv.Atoi(input)

	return n
}

func getS(r *bufio.Reader) []string {
	input, _ := r.ReadString('\n')

	input = strings.TrimSpace(input)

	return strings.Split(input, " ")
}

func main() {
	r := bufio.NewReader(os.Stdin)

	runsN := getNum(r) // get number of dungeon runs (predefined)
	runsPerDung := make(map[string]float32)
	dungMap := make(map[string]bool)
	var dungs float32

	// go through all input
	for i := 0; i < runsN; i++ {
		s := getS(r)

		dung := s[0]
		nick := s[1]

		// create list (slice) of all runs which we have
		if !dungMap[dung] {
			dungMap[dung] = true
			dungs++
		}

		runsPerDung[nick] += 1
	}

	for i, v := range runsPerDung {
		fmt.Printf("%s : %.2f\n", i, v/dungs)
	}

	fmt.Println("\nTop players: ")
	for i, v := range runsPerDung {
		if v/dungs >= 1.1 {
			fmt.Println(i)
		}
	}
}