为啥不通过

package zh.codegym.task.task04.task0428; /* 正数 */ import java.io.*; public class Solution { public static void main(String[] args) throws Exception { //在此编写你的代码 BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); int a = Integer.parseInt(br.readLine()); int b = Integer.parseInt(br.readLine()); int c = Integer.parseInt(br.readLine()); if((a>0)&&b>0){ if(c>0){ System.out.println(3); }else if(c<0){ System.out.println(2); } }else if(a>0&&b<0){ if(c>0){ System.out.println(2); }else if(c<0){ System.out.println(1); } }else if(a<0&&b<0){ if(c>0){ System.out.println(1); }else if(c<0){ System.out.println(0); } } } }