how can we store integer of limit more than its highest limit for solving the problem like FCTRL2

Here is the link for editorial.

link

It is well explained. You have to take an integer array to perform multiplication of large numbers.

Another interesting post by @kuruma

Link [here][1]

Some problems you can solve after reading this.

[FCTRL2][2]

[AMIFIB][3]

You can also use Linked List to perform operations on big numbers.

Refer [geeksforgeeks][4] to get more about linked list representation of large numbers.

Will try to add more if I find more problems based on this concept.

Happy Coding!!!

[1]: http://discuss.codechef.com/questions/7349/computing-factorials-of-a-huge-number-in-cc-a-tutorial

[2]: http://www.codechef.com/problems/FCTRL2

[3]: http://www.codechef.com/problems/AMIFIB

[4]: http://www.geeksforgeeks.org/add-two-numbers-represented-by-linked-lists/