#include "iostream"
#include "math.h"
using namespace std;

char letter[2][20];
int num[2][3];
bool flag=false;
int box;

int main() {
	cin >> letter[0] >> letter[1];
	box = 0;
	for (int i = 0; letter[0][i] != NULL; i++) {
		if (letter[0][i] != '.') {
			num[0][box] *= 10;
			num[0][box] += letter[0][i] - '0';
		}
		else box++;
	}
	box = 0;
	for (int i = 0; letter[1][i] != NULL; i++) {
		if (letter[1][i] != '.') {
			num[1][box] *= 10;
			num[1][box] += letter[1][i] - '0';
		}
		else box++;
	}
	for (int i = 0; i < 3; i++) {
		if (num[0][i] > num[1][i]) {
			flag = true;
			break;
		}
		if (num[0][i] < num[1][i])break;
	}
	if (num[0][0] == num[1][0] && num[0][1] == num[1][1] && num[2][0] == num[2][1])flag = true;
		if (flag)cout << "YES\n";
		else cout << "NO\n";
	return 0;

}