#include <iostream>
#include <locale>
#include <regex>
#include <string>
#include <vector>
#include <windows.h>
using namespace std;
BOOL add_locale(LPWSTR str, DWORD flags, LPARAM param) {
    vector<string>& vec = *reinterpret_cast<vector<string>*>(param);
    int size            = WideCharToMultiByte(CP_ACP, 0, str, -1, nullptr, 0, nullptr, nullptr);
    if (size) {
        vector<char> narrow(static_cast<size_t>(size), '\0');
        if (WideCharToMultiByte(CP_ACP, 0, str, -1, narrow.data(), size, nullptr, nullptr)) {
            vec.push_back(narrow.data());
        }
    }
    return TRUE;
}
int main() {
    vector<string> locales;
    locales.push_back("C");
    EnumSystemLocalesEx(&add_locale, 0, reinterpret_cast<LPARAM>(&locales), nullptr);
    for (const string& loc_name : locales) {
        const locale loc(loc_name);
        regex_traits<char> traits;
        regex_traits<wchar_t> wtraits;
        traits.imbue(loc);
        wtraits.imbue(loc);
        for (unsigned int i = 0; i <= 0xff; ++i) {
            try {
                const char x = (char) (unsigned char) i;
                if (traits.translate(x) != x) {
                    cout << loc_name << i << '\n';
                }
            } catch (const length_error&) {
            }
        }
        for (unsigned int i = 0; i <= 0xffff; ++i) {
            try {
                const wchar_t x = (wchar_t) i;
                if (wtraits.translate(x) != x) {
                    cout << loc_name << i << '\n';
                }
            } catch (const length_error&) {
            }
        }
    }
    return 0;
}