Remove ArrayIndexOutOfBoundsException

以下程序导致ArrayIndexOutOfBoundsException。我有两个数组s1和s2。

代码：

/* IMPORTANT: class must not be public. */

import java.io.BufferedReader;
import java.io.InputStreamReader;
class TestClass {
    public static void main(String args[] ) throws Exception {

    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String s1="",s2="";
    int c=0,a=0;
          int T = Integer.parseInt(br.readLine());
        while(T-->0)
        {
            s1=br.readLine();
            String ars1[]=s1.split(" ");
            int N=Integer.parseInt(br.readLine());
            while(N-->0)
            {
                s2=br.readLine();
                String ars2[]=s2.split(" ");
                for(int i=0;i<ars1.length;i++)
                {
                    for(int j=0;j<ars2.length;j++)
                    {
                        if(ars2[i]==ars1[j])
                        {
                            c++;
                            continue;
                        }
                    }
                }
                if(c==ars1.length)
                a++;
            }
        }
        System.out.println(a);
    }
}

如何修复？