s1=list(input ())
s2=list(input ())

def sam(st, st2):
    for i in range(len(st2)):
        if st==st2[i]:
            st2.pop(i)
            return(st2)
            break
    return(0)
y=1
for i in range(len(s1)):
    if sam(s1[i],s2)==0:
        print("NO")
        y=0
        break
if y==1:
    print("YES")