#include <locale>
#include <iostream>
int main()
{
//std::setlocale(LC_ALL, "");
std::locale::global(std::locale(""));
std::locale loc = std::locale();
std::cout << std::isalnum(L'Я', loc) << "\n";
std::cout << std::isalnum(L'ל', loc) << "\n";
std::cout << std::isalnum(L'¿', loc) << "\n";
}
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