1.I think that the memory limit with 1M is too small.
2.I checked msdn,they says int and long types are all 4
bytes long,and no bigger types avalible.but i think many
problems here need more than this,such as 1017.....

> 1.I think that the memory limit with 1M is too small.

It seems, that it's enough.

> 2.I checked msdn,they says int and long types are all 4
> bytes long,and no bigger types avalible.but i think many
> problems here need more than this,such as 1017.....

All problems could be, and were solved on DOS system with
Borland Pascal/C++.