I create a struct STACK like this:
struct STACK
{
    int number;
    unsigned char before[3];
};

and keep arrays:
STACK LIST[100000+1];
int last[1000];

Apparently (3B+4B)*10^5 = 7*10^2 KB which is less than 750 :D
whats wrong with it? :/


how much memory does an empty cpp code consume?

UPD:

now I use these arrays and structs:
struct STACK
{
    int number;
    unsigned short before;
};

int last[1000];
int counter = 0;
STACK *LIST = new STACK[100000+1];

int tmp = -1;
string strr("PUSH");

int additional_bit[3200];
char STR[5];

and still MLE XDXD


btw, an empty cpp code uses ~80KB which is OK for my code but why does it still fail?:/

I think your struct is packed by compiler into nearest div 4 byte blocks, i.e. into 8byte blocks. Try to use arrays instead or search for additional compiler options