Q>File.ReadAllLines("Numbers.txt")
Q>    .Select(line => line.Split(','))
Q>    .Where(numbers => numbers.Length > 2)
Q>    .Select(numbers => numbers.Aggregate(0, (total, number) => total ^ Int32.Parse(number)))
Q>    .OrderByDescending(result => result)
Q>    .ForEach(Console.WriteLine);
Q>

ifstream file("Numbers.txt");
multiset<int> result;
string row;
while(getline(file, row)){
    if(count(row.cbegin(), row.cend(), ',')<2) continue;
    tokenizer<char_separator<char>> numbers(row, char_separator<char>(","));
    result.insert(accumulate(numbers.begin(), numbers.end(), 0, [](int a, const string& n){return lexical_cast<int>(n);}));
}
for(auto i=result.crbegin(); i!=result.crend(); ++i) cout<<*i<<endl;

Arrays are analogous to the mathematical concepts of vectors, matrices, and tensors. Indeed, arrays with one or two indices are often called vectors or matrices, respectively.

НС>Так уперлось все в вывод в консоль

stringstream buf;
buf<<ifstream("Numbers.txt").rdbuf();

multiset<int> result;
vector<int> row;
auto calc=[&](...){if(row.size()>2) result.insert(accumulate(row.begin(), row.end(), 0, [](int a, int n){return a^n;})); row.clear();};
parse(buf.str().begin(), buf.str().end(), (*(int_[ph::push_back(ph::ref(row), _1)] % ',' >> -eol)[calc]));
for(auto i=result.crbegin(); i!=result.crend(); ++i) cout<<*i<<endl;

FILE* file=fopen("Numbers.txt", "rb");
fseek(file, 0, SEEK_END);
int size=ftell(file);
fseek(file, 0, SEEK_SET);
unique_ptr<char[]> buf(new char[size]);
fread(buf.get(), 1, size, file);
fclose(file);

multiset<int> result;
vector<int> row;
auto calc=[&](...){if(row.size()>2) result.insert(accumulate(row.begin(), row.end(), 0, [](int a, int n){return a^n;})); row.clear();};
parse(buf.get(), buf.get()+size, (*(int_[ph::push_back(ph::ref(row), _1)] % ',' >> -eol)[calc]));
for(auto i=result.crbegin(); i!=result.crend(); ++i) cout<<*i<<endl;

НС>>Так уперлось все в вывод в консоль

using (StreamReader sr = new StreamReader(path, encoding))
  while ((line = sr.ReadLine()) != null)
    lines.Add(line);

using (StreamReader sr = new StreamReader(path, encoding))
  while ((line = sr.ReadLine()) != null)
    yield return line;

var results = from line in File.ReadAllLines("Numbers.txt")
              select line.Split(',') into numbers
              where numbers.Length > 2
              select numbers.Aggregate(0, (total, number) => total ^ Int32.Parse(number)) into result
              orderby result descending select result;
foreach (var result in results)
    Console.WriteLine(result);

_>ifstream file("Numbers.txt");
_>multiset<int> result;
_>string row;
_>while(getline(file, row)){
_>    if(count(row.cbegin(), row.cend(), ',')<2) continue;
_>    tokenizer<char_separator<char>> numbers(row, char_separator<char>(","));
_>    result.insert(accumulate(numbers.begin(), numbers.end(), 0, [](int a, const string& n){return lexical_cast<int>(n);}));
_>}
_>for(auto i=result.crbegin(); i!=result.crend(); ++i) cout<<*i<<endl;