C++ - Simple Problems - Problem 3 - Code Enhance Performance

gistfile1.txt

    int count = 0;

    for(int a = 0; a < 100; a++)
    {
       for(int b = 0; b < 100; b++)
       {
        for(int c = 0; c < 100; c++)
        {
            int d = 100 - (a + b + c);

            if(d > 0 && d < 100) count++;

        }
       }
    }

    cout << count;