#include <string>
#include <iostream>

struct Version {
	int major, minor, patch;
};
bool operator<(const Version &fossil, const Version &v) {
	if (fossil.major != v.major) {
		return fossil.major < v.major;
	}
	else if (fossil.minor != v.minor) {
		return fossil.minor < v.minor;
	}
	else {
		return fossil.patch < v.patch;
	}
}
Version to_ver(std::string v) {
	auto idx = v.find('.');
	auto major = v.substr(0, idx);
	v = v.substr(idx + 1);
	idx = v.find('.');
	auto minor = v.substr(0, idx);
	auto patch = v.substr(idx + 1);
	return Version{ std::stoi(major), std::stoi(minor), std::stoi(patch) };
}
int main() {
	std::string fossil, ver;
	std::cin >> fossil >> ver;
	if (to_ver(fossil) < to_ver(ver)) {
		std::cout << "NO\n";
	}
	else {
		std::cout << "YES\n";
	}
	return 0;
}