BaieresDev golang challenge

food_ratings.go

package main

import "fmt"


func solution (n int, ratings [][]int) int {
dishRatings := make(map[int][2]int)

for i := 0; i < n; i++ {
	dishID, rating := ratings[i][0], ratings[i][1]
	values, exists := dishRatings[dishID]
	if !exists {
		values = [2]int{0, 0}
	}
	values[0] += rating 
	values[1]++        
	dishRatings[dishID] = values
}

highestAverageRating := -1.0
bestDishID := -1

for dishID, values := range dishRatings {
	totalRatings, count := values[0], values[1]
	averageRating := float64(totalRatings) / float64(count)

	if averageRating > highestAverageRating || (averageRating == highestAverageRating && dishID < bestDishID) {
		highestAverageRating = averageRating
		bestDishID = dishID
	}
}

return bestDishID

}

func main() {
    
    var n int
    fmt.Scanln(&n)
    ratings := make([][]int, n)
    for i_ratings := 0; i_ratings < n; i_ratings++ {
    	ratings[i_ratings] = make([]int, 2)
    	for j_ratings := 0; j_ratings < 2; j_ratings++ {
    		fmt.Scan(&ratings[i_ratings][j_ratings])
    	}
    }

    var out_ int = solution(n, ratings)
    fmt.Println(out_)
}