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KHU24 - Тоог хөрвүүл

Өгөгдсөн 4 оронтой тоог хөрвүүл.

Input

Эерэг бүхэл ганц тоо

Output

Хариу болох ганц тоо

Example

Input:
1234

Output:
4321

Нэмсэн:@###@
Огноо:2017-10-26
Хугацааны хязгаарлалт:1s
Эх кодын хэмжээний хязгаарлалт:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Програмчлалын хэлүүд:C-CLANG C CSHARP C++ 4.3.2 CPP CPP14 CPP14-CLANG C99 CLPS COFFEE LISP clisp D-CLANG D JAVA JS-MONKEY OBJC-CLANG OCT PAS-GPC PHP PYTHON PYTHON3

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