a0,b0,c0 = map(int,input().split('.'))
a1,b1,c1 = map(int,input().split('.'))
ac,bc,cc = False,False,False

if a0 - a1 >= 0:
    ac = True
if b0 - b1 >= 0:
    bc = True
if c0 - c1 >= 0:
    cc = True

if ac and bc and cc:
    print('YES')
else:
    print('NO')