12. The song of the wheels

package main

import (
    "fmt"
    "strconv"
)

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

    var print = "No!"

    for a := 1; a <= 9; a++ {
        for b := 1; b <= 9; b++ {
            for c := 1; c <= 9; c++ {
                for d := 1; d <= 9; d++ {
                    if a * b + c * d == n && a < b && c > d {
                        fmt.Printf("%d%d%d%d ", a, b, c, d)
                        counter++
                        if counter == 4 {
                            print = "Password: " + strconv.Itoa(a) + strconv.Itoa(b) + strconv.Itoa(c) + strconv.Itoa(d)
                        }
                    }
                }
            }
        }
    }

    fmt.Printf("\n%s", print)
}