I have strange problem, my code is compiled well on my home PC (MS VC++ 2010 also), but the same code getting compilation error on Timus.
Let me present here a fragment of my code (All problem-related part was expunged, only variable declaration-initialization and input remained). This is also a compilable code on my PC. Can you consider it please. Thanks in advance.

#pragma comment(linker, "/STACK:5000000")
#include <iostream>
using namespace std;

int main()
{
    char tmp, or[250001], samp[750002];
    int N, z[750002];
    memset(&z[0], 0, 750002*4);
    scanf("%i", &N);
    scanf("%c", &tmp);
    cin.getline(or, 250001);
    cin.getline(samp, 750002);
    return 0;
}

Code above gives CE on Timus:

8002b36b-0800-4fc8-aa2b-53e6cb233ddd
8002b36b-0800-4fc8-aa2b-53e6cb233ddd(7) : error C2059: syntax error : '||'
8002b36b-0800-4fc8-aa2b-53e6cb233ddd(12) : error C2143: syntax error : missing ')' before '||'
8002b36b-0800-4fc8-aa2b-53e6cb233ddd(12) : error C2661: 'std::basic_istream<_Elem,_Traits>::getline' : no overloaded function takes 0 arguments
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
8002b36b-0800-4fc8-aa2b-53e6cb233ddd(12) : error C2059: syntax error : ','
8002b36b-0800-4fc8-aa2b-53e6cb233ddd(12) : error C2059: syntax error : ')'
8002b36b-0800-4fc8-aa2b-53e6cb233ddd(13) : error C2065: 'samp' : undeclared identifier

try rename array "or", I think it can resolve problem

Thanks, the idea of renaming really worked!