题解 | #删除字符串中出现次数最少的字符#

text =input().lower()
sum_min = ''
f = {}
for i in text:
    if i in f:
         f[i] += 1
    else:
         f[i] = 1
min = min(f.values())

resu=''
for i in text:
    if f[i] != min:
        resu += i

print(resu)