Wrong answer in ICPC16B

/* package codechef; // don’t place package name! */

import java.util.;
import java.lang.
;
import java.io.*;

/* Name of the class has to be “Main” only if the class is public. */
class Codechef
{
public static void main (String[] args) throws java.lang.Exception
{
// your code goes here
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
String inp=br.readLine();
inp=inp.trim();
int n=Integer.parseInt(inp);
while(n>0){
String intInput=br.readLine();
int size=Integer.parseInt(intInput);

	    int i=0,j=0,k=0,m=0;
	    String inputString=br.readLine();
	    inputString=inputString.trim();
	    String[] aa=inputString.split("\\s+");
	    double[] a=new double[size];
	    for(i=0;i<size;i++){
	        a[i]=Double.parseDouble(aa[i]);
	        //System.out.println(a[i]);
	    }
	    if(size<2){
	        System.out.println("no");
	        n--;
	        continue;

	    }
	    int fun=0;
	    for(k=size-1;k>0;k--){
	        fun=fun+k;
	        
	   
	    }
	    int count=0;
	    //int temp1=0;
	    //System.out.println("No of computes:"+fun);
	    double[] temp=new double[fun];
	    boolean flag=false;
	    for(i=0,k=0;i<a.length;k++,i++){
	        for(j=i+1,m=k;j<a.length;j++){
	            
	            temp[m]=(a[i]*a[j]);
	            
	            //System.out.println(a[i]+"*"+a[j]+":"+temp[m]+"("+m+")");
	            m++;
	            }
	       k=m-1;
	        
	    }
	    
	    for(i=0;i<temp.length;i++){
	        for(j=0;j<a.length;j++){
	           // System.out.println("Temp:"+temp[i]+",A:"+a[j]);
	            if(temp[i]==a[j]){
	                flag=true;
	            }
	        }
	    }
	    if(flag==true){
	        System.out.println("yes");
	    }
	    else if(flag==false){
	        System.out.println("no");
	    }
	    n--;
	    
	}
}

}
been encountering wrong answer for this submission. any idea why? thank you!

//