#include <iostream>
#include <string>

int main() {
	std::string month_name;
	std::cin >> month_name;
	if (month_name == "January") {
		std::cout << 1;
	} else if (month_name == "February") {
		std::cout << 2;
	} else if (month_name == "March") {
		std::cout << 3;
	} else if (month_name == "April") {
		std::cout << 4;
	} else if (month_name == "May") {
		std::cout << 5;
	} else if (month_name == "June") {
		std::cout << 6;
	} else if (month_name == "July") {
		std::cout << 7;
	} else if (month_name == "August") {
		std::cout << 8;
	} else if (month_name == "September") {
		std::cout << 9;
	} else if (month_name == "October") {
		std::cout << 10;
	} else if (month_name == "November") {
		std::cout << 11;
	} else if (month_name == "December") {
		std::cout << 12;
	} else {
		std::cout << "Invalid month";
	}
	
	std::cout << endl;
}