#! ruby
# yukicoder My Practice
# author: Leonardone @ NEETSDKASU

(A2,B2,C2),(A1,B1,C1) = readlines.map{|x| x.split('.').map(&:to_i)}


f = ((A1 > A2) || ((A1 == A2) && ((B1 > B2) || ((B1 == B2) && (C1 > C2)))))

puts f ? 'YES' : 'NO'