请问程序哪错了

import java.util.Scanner;
public class Q{
   public static void main(String[] args){
      Scanner s = new Scanner(System.in);
      System.out.println("------猜拳游戏------");
      System.out.println("请出拳：1:剪刀 2：石头 3：布");
      int person = s.nextIng();
      int computer = (int)(Math.random()*3)+1;
      String Mark = "头";//这是标记；
      String Mark2 = "头";
      
    switch (person){
             case 1:
             Mark = "剪刀";
             break;
             case 2:
             Mark = "石头";
             break;
             case 3:
             Mark = "布";
             break;
           }
           
      
           
   
   
   switch (person){
             case 1:
             Mark2 = "剪刀";
             break;
             case 2:
             Mark2 = "石头";
             break;
             case 3:
             Mark2 = "布";
             break;
           }
           
           
   if (person==computer){
      
              System.out.println("你出的是："  +person    +"电脑出的是："+computer +"平局");
            }
            else if (person==1&&computer==2||person==2&&computer==3||person==3&&computer==1){
               
                System.out.println("你出的是："+person +"电脑出的是"  +computer+"你赢了");
               
               
            }else{
               
              System.out.println("你出的是："+person+  "电脑出的是" +computer +"你输了");
               
           }   
           
           
           
           
           
   }



}