#include <iostream> #include <string>

int main() { std::string str; std::cin >> str;

std::string digitStr, charStr;

for (size_t i = 0; i < str.size(); ++i) {
    char c = str[i];
    if (isdigit(c)) {
        digitStr += c;
    } else if (isupper(c)) {
        charStr += c;
    }
}

std::cout << digitStr << charStr << std::endl;

return 0;

}