哈哈哈

import java.util.Scanner;
public class Dome1{
    public static void main(String[]args){
        Scanner input = new Scanner(System.in);
        String id="",swd="",id1="admin",swd1="666";
        int a,b,c,max;
        System.out.print("请输入账号:");
        id=input.next();
        if(id.equals(id1)){
        System.out.print("请输入密码:");
        swd=input.next();
            if(swd.equals(swd1)){
                System.out.print("恭喜登录成功!");
                System.out.print("请输入第一个数:");
                a=input.nextInt();
                System.out.print("请输入第二个数:");
                b=input.nextInt();
                System.out.print("请输入第三个数:");
                c=input.nextInt();
                if(a>b){
                    max = a;
                }
                else{
                    max = b ;
                }
                if(max >c){
                    max= max ;
                }
                else{
                    max =c;
                }
                System.out.println("最大值为:"+max);
                
            }
        }
        else{
            System.out.print("账号错误,请重新输入账号:");
        }
    }
}