a = map(str, raw_input())
b = map(str, raw_input())

for i in range(0, len(a)):
    for j in range(0, len(b)):
        if a[i] == b[j]:
            b[j] = '0'
            break

if b.count('0') == len(b):
    print "YES"
else:
    print "NO"