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private static Int32 NumOfSubRectanges(Int32 m, Int32 n) {
    return m * n * (m + 1) * (n + 1) / 4 - 1;
}

 
public static void Generate(String input, String output) {
    using (FileStream fs = new FileStream(input, FileMode.Open, FileAccess.Read, FileShare.None),  ws = new FileStream(output, FileMode.Create, FileAccess.Write, FileShare.None)) {
        using (StreamReader reader = new StreamReader(fs)) {
            using (StreamWriter writer = new StreamWriter(ws)) {
                String line = String.Empty;
                line = reader.ReadLine();
                if (line == null) return;
                Int32 start_idx = 0, end_idx = 0, prev = 0;
                Int32 sumOfSubRects=0;
                Int32 numOfRects=0;
                ArrayList items = new ArrayList();
                while ((line=reader.ReadLine()) != null) {
                    items.Add(line);
                }
                for (Int32 i = 0; i < items.Count; ++i) {
                    String current = items[i] as String;
                    while ((start_idx = current.IndexOf('1',prev)) != -1) {
                        end_idx = current.IndexOf('0', (start_idx == current.Length -1) ? start_idx : start_idx + 1);
                        end_idx = (end_idx == -1) ? current.Length : end_idx;
                        prev = end_idx + 1;
                        --end_idx;
                        if (i != 0 && ((String)items[i - 1])[start_idx] == '1' && ((String)items[i - 1])[end_idx] == '1') {
                            if (start_idx > 0 && end_idx < current.Length - 1) {
                                if (((String)items[i - 1])[start_idx - 1] == '0' && ((String)items[i - 1])[end_idx + 1] == '0') continue;
                            } else if (start_idx > 0) {
                                if (((String)items[i - 1])[start_idx - 1] == '0') continue;
                            } else if (end_idx < current.Length -1 ) {
                                if (((String)items[i - 1])[end_idx + 1] == '0') continue;
                            }
                        }
                        Int32 n = end_idx - start_idx + 1;
                        Int32 m = 1;
                        Int32 j=i;
                        while (++j < items.Count) {
                            if (((String)items[j])[start_idx] == '0' || ((String)items[j])[end_idx] == '0') break;
                            if (start_idx > 0 && end_idx < current.Length - 1) {
                                if (((String)items[j])[start_idx - 1] != '0' || ((String)items[j])[end_idx + 1] != '0') break;
                            } else if (start_idx > 0) {
                                if (((String)items[j])[start_idx - 1] != '0') break;
                            } else if (end_idx < current.Length -1 ) {
                                if (((String)items[j])[end_idx + 1] != '0') break;
                            }
                            ++m;
                        }
                        sumOfSubRects += NumOfSubRectanges(m,n);
                        ++numOfRects;
                        if (prev >=current.Length) break;
                    }
                    prev=0;
                }
                writer.WriteLine("A: {0}\tB: {1}", numOfRects, sumOfSubRects);
            }
        }
    }
}