Stroka

s = input()
t = input()

def funct(s, k):
    return s[k:] + s[k-1::-1]

good = False
if len(s) != len(t):
    print('No')
elif s == t:
    print('Yes')
    print(0)
elif s != t:
    for x in range(len(s)):
        if t == funct(s, x):
            print('Yes')
            print(x)
            good = True
            break
    if not good:
        print('No')