From 5dd5ebe1c0f1c03ef46ff474eee33cfa9bf41c18 Mon Sep 17 00:00:00 2001
From: Eatswap <root@eatswap.org>
Date: Fri, 24 Mar 2023 00:03:37 +0800
Subject: [PATCH] add: requires constraint

---
 cpp/2303/230323-CN.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cpp/2303/230323-CN.cpp b/cpp/2303/230323-CN.cpp
index 9e4b537..919b511 100644
--- a/cpp/2303/230323-CN.cpp
+++ b/cpp/2303/230323-CN.cpp
@@ -2,8 +2,10 @@
 #include <functional>
 #include <iostream>
 #include <unordered_map>
+#include <concepts>
 
 template<typename T>
+requires std::totally_ordered<T>
 class MinMaxSegTree {
 private:
 	using V = std::vector<T>;