import java.util.Scanner;

/**
*@Author wzy
*@Date 2018年4月8日
*@Version JDK 1.8
*@Description Dem to Hex
*/ 
public class run {
    public static void main(String[] args)
    {
        Scanner sc=new Scanner(System.in);
        System.out.print("請輸入十進位制數：");
        int i=sc.nextInt();
        System.out.println("相應十六進位制數為："
 
+demToHex(i));

    }

    private static String demToHex(int i) {
        StringBuffer Hex=new StringBuffer("");
        String m="0123456789abcdef";
        if(i==0) Hex.append(i);
        while (i!=0) {
            Hex.append(m.charAt(i%16));
            i>>=4;
        }
        return Hex.reverse().toString();

    }
}