|
Project Euler Homework
|
What is the sum of both diagonals in a 1001 by 1001 spiral? More...
#include <iostream>Go to the source code of this file.
Classes | |
| class | spiral |
Functions | |
| int | main () |
Variables | |
| const unsigned | length = 1001 |
What is the sum of both diagonals in a 1001 by 1001 spiral?
Starting with the number 1 and moving to the right in a clockwise direction a 5 by 5 spiral is formed as follows: 21 22 23 24 25 20 7 8 9 10 19 6 1 2 11 18 5 4 3 12 17 16 15 14 13 It can be verified that the sum of the numbers on the diagonals is 101. What is the sum of the numbers on the diagonals in a 1001 by 1001 spiral formed in the same way?
Definition in file 028.cpp.
1.7.3