static int performEcholocation (final EcholocationManager manager) throws EcholocationException,LocatorConnectionException{

        int count = 0;
        while(true){
            try{
                manager.connectLocator();
                break;
            }
            catch (LocatorConnectionException e){
                count+=1;
                if (count>4){
                    throw e;
                }
            }
        }
        int[] arr = new int[100];
        boolean isDisconnected = false;
        try{
            for (int i = 0;i<100;++i){
                int elem = manager.locate(i+1);
                arr[i] = elem;
            }
        }
        catch(EcholocationException err){
            isDisconnected = true;
            try{
                manager.disconnectLocator();
            }
            catch(LocatorConnectionException ignored){
            }
            throw err;
        }
        finally{
            if (!isDisconnected){
            try{
                manager.disconnectLocator();
            }
            catch(LocatorConnectionException ignored){
            }
            }
        }
        int res = arr[0];
        for (int i = 1;i<arr.length;++i){
            res^=arr[i];
        }
        return res;


    }