From a1ced467849d588ef6b0d709bf7881da17b01681 Mon Sep 17 00:00:00 2001
From: Luthics <luthics@foxmail.com>
Date: Thu, 20 Oct 2022 21:31:00 +0800
Subject: [PATCH] =?UTF-8?q?=E6=9B=B4=E6=96=B0=208,9=20=E9=A2=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 homework/2/8_1.py | 10 ++++++++++
 homework/2/8_2.py |  5 +++++
 homework/2/9.py   |  5 +++++
 3 files changed, 20 insertions(+)
 create mode 100644 homework/2/8_1.py
 create mode 100644 homework/2/8_2.py
 create mode 100644 homework/2/9.py

diff --git a/homework/2/8_1.py b/homework/2/8_1.py
new file mode 100644
index 0000000..2f8e05f
--- /dev/null
+++ b/homework/2/8_1.py
@@ -0,0 +1,10 @@
+from math import *
+
+# x = input().split()
+a = input()
+for i in range(floor(len(a)/2)):
+    if(a[i]!=a[len(a)-i-1]):
+        print("False")
+        exit()
+
+print("True")
diff --git a/homework/2/8_2.py b/homework/2/8_2.py
new file mode 100644
index 0000000..302f517
--- /dev/null
+++ b/homework/2/8_2.py
@@ -0,0 +1,5 @@
+s = input()
+if (s == s[::-1]):
+    print("True")
+else:
+    print("False")
diff --git a/homework/2/9.py b/homework/2/9.py
new file mode 100644
index 0000000..385f962
--- /dev/null
+++ b/homework/2/9.py
@@ -0,0 +1,5 @@
+x = list(map(int,input().split()))
+x.sort()
+a = x[0]
+b = x[1]
+print(round((a+b)*(b-a+1)/2))
\ No newline at end of file