Задание 11 выполнил 2.2

2.2_lesson.11.20.py

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+****Задание 11 Параграф 2.2***
+***Напишите программу, которая проверяет, является ли число красивым.***
+
+if name == "main":
+    num = int(input())
+
+    first = num // 100
+    second = num // 10 % 10
+    third = num % 10
+
+    if max(first, second, third) != first and min(first, second, third) != first:
+        middle = first
+    elif max(first, second, third) != second and min(first, second, third) != second:
+        middle = second
+    else:
+        middle = third
+
+    if max(first, second, third) + min(first, second, third) == middle * 2:
+        print('YES')
+    else:
+        print('NO')