A,B,C=map(int,raw_input().split("."))
a,b,c=map(int,raw_input().split("."))
if a>A:
    print"NO"
    exit()
if a<A:
    print "YES"
    exit()
if b>B:
    print"NO"
    exit()
if b<B:
    print "YES"
    exit()
if c>C:
    print"NO"
    exit()
print"YES"