OJ Board

You can read character by character until reading an end-of-line character.
This code in Pascal:
[pascal]var
f:Text;
c:Char;
while not eoln(f) do
begin
Read(f, c);
{do something with c}
end;
Readln(f);{advance to the next line}
[/pascal]
might become
[cpp]ifstream inp;
char c;
while ((c = inp.get ...

I think that the description of problem 273 is wrong.
It states that 1 < n < 13, but when I sent my solution, I received Runtime Error.
When I enlarged my arrays to hold more than 12 sticks, I got Wrong Answer.
Then I submitted a solution that would go into an endless loop if n is not between 1 and ...

The Judge's Pascal compiler (Free Pascal) has 64-bit signed integer type called Int64

Miguel, I haven't read the code, but I know that int and long are both 32-bit signed integers for the Judge's C/C++ compiler.

The right way to write detect_addition_overflow() is the following (see Leendert Ammeraal, Algorithms and Data Structures in C++, John Wiley & Sons, ISBN 0-471-96355-0):

[cpp]inline int detect_addition_overflow(int a, int b, int overflow_value) {
int result = a + b;
if (result >= a) return result ...

Not the underscore makes it work. It is the struct keyword.
See:
[c]typedef struct myStruct {
int data;
/*!!!*/myStruct *next;
};[/c]
[c]typedef struct _myStruct {
int data;
/*!!!*/struct _myStruct *next;
}myStruct;[/c]

You have submitting problem. I guess you are using e-mail submission. Do you see the long one-line comment containing the word full? SMTP servers (the servers delivering electronic mail) and many e-mail clients love wrapping long lines, so what the judge receives is:
// Check if both lines segments ...

What says the Online Judge, that is, what error message you get?

You can delete your current username (from the Profile page) and then create new.

As far as I know this is a classical problem in Linear Programming

'Old C++ compiler unacceptable' and 'Compilation with optimization turned off unaccepteble' are two quite different things.
I don't like the lack of optimization, but I understand the administrators, as they have only one computer to run a web server, mail server, to compile solutions and to run ...

Your 'growing' code should not work as the two parts of the array, the one you allocate with
[cpp]num = new int[5];[/cpp]
and the one allocated with
[cpp]pnum = new int[10];[/cpp]
will be at different (not near) addresses in the general case.

[cpp]pnum = &num[4];[/cpp]
does nothing when followed by ...

I have extracted this from the manual for you:

To make an integer constant of type `long long int', add the suffix `LL' to the integer. To make an integer constant of type `unsigned long long int', add the suffix `ULL' to the integer.

You should use
[cpp]scanf("%lld%lld", &a, &b);[/cpp]
or
[cpp]scanf("%Ld%Ld", &a, &b);[/cpp]
when reading long long ints and
[cpp]printf("%lld %lld\n", a, b)[/cpp]
or
[cpp]printf("%Ld %Ld\n", a, b)[/cpp]
when writing them.