#include <iostream>
#include <sstream>

using namespace std;

int main(int argc, const char* argv[])
{
	string ver1, ver2;
	cin >> ver1 >> ver2;
	for (auto&& c : ver1)
		if (c == '.') c = ' ';
	for (auto&& c : ver2)
		if (c == '.') c = ' ';
	stringstream s;
	s << ver1 << endl << ver2 << endl;
	int A[3], B[3];
	for (auto&& a : A) s >> a;
	for (auto&& b : B) s >> b;
	for (int i = 0; i < 3; i++) {
		if (A[i] < B[i]) {
			cout << "NO" << endl;
			return 0;
		}
		if (A[i] > B[i]) break;
	}
	cout << "YES" << endl;
	return 0;
}