for (int A = 1; A < N - 2; A++) {
    int ProfitA = Sum(array[0...A-1]);
    int ProfitB = array[A];
    int ProfitC = Sum(array[A+1...N-])
    for (int B = 1; B < N - 1; B++) {
        //here the values are "current

        //and here they are being prepared for the next iteration
        ProfitB = ProfitB + array[A+B-1];
        ProfitC = ProfitC + array[A+B]);
    }
}