From 073ac572fa05ee588a84e4d5146951780bfa3000 Mon Sep 17 00:00:00 2001
From: XinRoom <32238570+XinRoom@users.noreply.github.com>
Date: Fri, 4 Nov 2022 18:59:35 +0800
Subject: [PATCH] fix: NarrowMode getTotalNum is 0 so like 10.0.1-2.0.255

---
 iterator.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/iterator.go b/iterator.go
index 360fb8f..d6c7ebd 100644
--- a/iterator.go
+++ b/iterator.go
@@ -263,7 +263,7 @@ func (it *Iter) getTotalNum() uint64 {
 	case NarrowMode:
 		var ret = uint64(1)
 		for _, v := range it.classmate {
-			ret = ret * uint64(v.e-v.s+1)
+			ret = ret*uint64(v.e-v.s) + 1
 		}
 		return ret
 	}