题解 | #牛牛的计划#

y,m,d = map(int,input().split())
y1,m1,d1 = map(int,input().split())

if y < y1:
    print('yes')
elif y > y1:
    print('no')
else:
    
    if m < m1:
        print('yes')
    elif m > m1:
        print('no')
    else:

        if m > m1:
            print('no')
        else:
            print('yes')