#include <iostream>
#include <string>
#include <fstream>

using namespace std;

int main()
{
	ifstream input;
	input.open("input.txt");
	ofstream output;
	output.open("output.txt");
	string s;
	int i;
	string word = "";
	while (!input.eof()) {
		getline(input, s);
		i = s.length() - 1;
		while (s[i] != ' ') {
			word = s[i] + word;
			i--;
		}
		if (word.length() == 9){
			string x = word.substr(0, 4);
			int start = stoi(x);
			x = word.substr(5);
			int end = stoi(x);
			if (end - start > 50 && end <= 1900 && end >= 1801 && start <= 1900 && start >= 1801) {
				output << s << endl;
			}
		}
		word = "";
	}
}