import std.algorithm, std.array, std.container, std.range;
import std.string, std.conv;
import std.math, std.bigint, std.bitmanip, std.random;
import std.stdio, std.typecons;

void main()
{
  auto rd1 = readln.chomp.split('.').map!(to!int).array;
  auto rd2 = readln.chomp.split('.').map!(to!int).array;
  writeln(rd1 >= rd2 ? "YES" : "NO");
}