From 2a16cbde54db78fc220958e578963d83a030edac Mon Sep 17 00:00:00 2001
From: Zengtudor <Zengtudor@outlook.com>
Date: Fri, 22 Aug 2025 11:14:06 +0800
Subject: [PATCH] update

---
 src/8/21/strexpect.cpp | 14 ++++++++++++++
 src/8/22/P1297.cpp     |  3 +++
 2 files changed, 17 insertions(+)
 create mode 100644 src/8/21/strexpect.cpp
 create mode 100644 src/8/22/P1297.cpp

diff --git a/src/8/21/strexpect.cpp b/src/8/21/strexpect.cpp
new file mode 100644
index 0000000..6eafde0
--- /dev/null
+++ b/src/8/21/strexpect.cpp
@@ -0,0 +1,14 @@
+/*
+假设一个随机数生成器每次随机一个数[1,n]，形成一个无限长的字符串s，
+给定一个长度为m的数，那么第一次在s中出现位置的期望是多少
+
+n=2 12 的位置
+e[1]=1/2*1+1/2*(e[1]+1)
+
+
+
+*/
+
+int main(){
+
+}
\ No newline at end of file
diff --git a/src/8/22/P1297.cpp b/src/8/22/P1297.cpp
new file mode 100644
index 0000000..294989d
--- /dev/null
+++ b/src/8/22/P1297.cpp
@@ -0,0 +1,3 @@
+int main(){
+    
+}
\ No newline at end of file