package main

import (
	"fmt"
	"math/rand"
	"time"
)

func main() {
	rand.Seed(time.Now().Unix())
	data := make([]byte, 10)
	var num int
	for i := 0; i < 10; i++ {
		num = rand.Intn(57) + 65
		for {
			if num > 90 && num < 97 {
				num = rand.Intn(57) + 65
			} else {
				break
			}
		}
		data[i] = byte(num)
	}

	fmt.Print(string(data))
}