#include <iostream>
#include <string>

void no() {
	std::cout << 400 << std::endl;
			std::exit(0);
}

int main() {
	std::string s;
	std::cin >> s;
	
	if(s.size() < 1 || s.size() > 32) no();
	
	if(s[0] == '-' || s[0] == '_') no();
	if(s[s.size()-1] == '-' || s[s.size()-1] == '_') no();
	
	for(char c : s) {
		if(!std::isalnum(c) && c != 0x5F && c != 0x2D) no();
	}
	
	std::cout << 200 << std::endl;
	return 0;
}