message: remove hardcoded output size
  calculate output size based on the output tensor dimensions
diff: @@ -326,7 +326,13 @@ void ProcessInputWithQuantizedModel(
  NSLog(@"Time: %.4lf, avg: %.4lf, count: %d", end - start, total_latency / total_count,
  total_count);
  - const int output_size = 1000;
  + // read output size from the output sensor
  + const int output_tensor_index = interpreter->outputs()[0];
  + TfLiteTensor* output_tensor = interpreter->tensor(output_tensor_index);
  + TfLiteIntArray* output_dims = output_tensor->dims;
  + assert(output_dims->size == 2);
  + const int output_size = output_dims->data[1]-output_dims->data[0];
  +
  const int kNumResults = 5;
  const float kThreshold = 0.1f;
  