Linear Algebra and Group

Time limit1sMemory limit256 MB

Summary
Output the sum of the digits appearing in the cover illustration of a specific linear algebra textbook.
Level

Easy1 of 10

Topics
Implementation, Math, Brute force, Simulation
Solved
No attempts yet

Problem

Seungwon was reading Linear Algebra and Group (Lee Inseok, revised edition) to create a problem that cannot be solved without background knowledge. But since Seungwon himself does not understand the book either, he decided instead to make a problem that people who do not have the book cannot solve.

Find the sum of all digits (0 to 9) in the picture on the front cover of the book.

Input

There is no input for this problem.

Output

Output the sum of all digits in the picture. Digits outside the picture are not included.

Examples1

  1. Example 1

    Input
    Expected output
    51