Update main.py

main.py

@@ -31,6 +31,9 @@ CHALLENGE_TYPES = ["Object Detection", "Instance Segmentation"]
 LEADERBOARD_METRICS = ["bbox_mAP", "bbox_AP50", "segm_mAP", "segm_AP50"]
 DEFAULT_SORT_METRIC = "segm_AP50"
 
+LEADERBOARD_METIRCS_VQA = ["overall"]
+DEFAULT_SORT_METRIC = "overall"
+
 # =========================
 # HF API
 # =========================