diff --git a/8.10/A - 门.cpp b/8.10/A - 门.cpp
index 1191cd3..982218d 100644
--- a/8.10/A - 门.cpp	
+++ b/8.10/A - 门.cpp	
@@ -88,7 +88,7 @@ int main()
 	while (1)
 	{
 		scanf("%d", &n);
-		if (n == -1)
+		if (n == -1)//-1return
 			return 0;
 		memset(&w, 0, sizeof(wall) * (n + 1));
 		w[0].x = 0;