#include <fstream>
#include <iostream>

int main()
{
	int dial = 50;
	int password = 0;

	std::ifstream file("input.txt");
	std::string line;

	while (getline(file, line)) {
		int delta = std::stoi(line.substr(1));

		switch (line[0]) {
			case 'L':
				dial -= delta;
				while (dial < 0) dial += 100;
				break;
			case 'R':
				dial = (dial + delta) % 100;
				break;
		}

		if (dial == 0) password++;
	}

	std::cout << password << std::endl;

	return 0;
}