03. Lucky Numbers

package main

import "fmt"

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

    for i := 1; i <= 9; i++ {
        for k := 1; k <= 9; k++ {
            for j := 1; j <= 9; j++ {
                for x := 1; x <= 9; x++ {
                    if i + k == j + x && n % (i + k) == 0 {
                       fmt.Printf("%d%d%d%d ", i , k , j , x)
                    }
                }
            }
        }
    }
}