package main
import (
"fmt"
"os"
"strconv"
"github.com/01-edu/public/go/tests/lib"
)
func main() {
if len(os.Args) == 3 {
a, _ := strconv.Atoi(os.Args[1])
b, _ := strconv.Atoi(os.Args[2])
fmt.Println(lib.GCD(a, b))
}