This program runs in under 5 seconds on Xcode. Could somebody please give me some advice as to why code chef might giving me this time limit error.

include <iostream>

using namespace std; int main() {

int i, j;
int temp = 0;
int dat = 0 ;
int size = 0;

//fill array
cin >> size;
int myArray[size];
for(int i = 0; i < size; i++)
{
    cout << "enter data: ";
    cin >> dat;
    myArray[i] = dat;
}

//bubble sort array
for(i = 0; i < size; i++)
{

    for (j = 0; j < size-1; j++)
    {
        if (myArray[j] > myArray[j+1])
        {
            temp = myArray[j];
            myArray[j] = myArray[j+1];
            myArray[j+1] = temp;
        }
    }
}

//print array
for (i = 0; i < size; i++)
{
    cout << myArray[i] << endl;
}

return 0;

}