a=input()
b=input()
c=0
d=0
for i in range(len(a)):
    if a[i] in b:
        c=1
    else:
        break


for i in range(len(b)):
    if b[i] in a:
        d=1
    else:
        break

if c==1 and d==1:
    print("YES")

else:
    print("NO")