ab
eidbaooo

YES

from collections import Counter
p=input().strip()
s=input().strip()
m=len(p)
if m>len(s):
    print('NO')
else:
    need=Counter(p)
    window=Counter(s[:m])
    found=window==need
    for i in range(m, len(s)):
        window[s[i]]+=1
        window[s[i-m]]-=1
        if window[s[i-m]]==0: del window[s[i-m]]
        if window==need: found=True; break
    print('YES' if found else 'NO')