更新 8,9 题

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")

homework/2/8_2.py

@@ -0,0 +1,5 @@
+s = input()
+if (s == s[::-1]):
+    print("True")
+else:
+    print("False")

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))