while True:     try:         str0 = input()         dic, i = {}, 0         while i < len(str0) - ...

while True:     try:         str0 = input()         n = int(input())         x = str0.count('A') + str0.count('C')&...

while True:     try:         n = int(input())         arr0, i = [], 0         while i < n:   &nbs...

while True:     try:         n=int(input())         if 1<=n<=1000:             x=[n]       &nb...

while True:     try:         ip = input()         arr1 = ip.split('.')         if len(arr1) == 4:    &nbs...

while True:     try:         arr0 = list(input())         if 1 <= len(arr0) <= 2500:            &nb...

while True:     try:         # 加密         str1 = input()         if 1 <= len(str1) <= 1000 and str1...

while True:     try:         li=input().split()         #取到判断兄弟单词的原词，并排序         str0=li[-2]         arr0=list(str0...

while True:     try:         x=int(input())         arr1=input().split()         if len(arr1)==x and 1<=len(arr1)<=100:             y=int(input())             arr2=...

while True:     try:         string = input()         if 1 < len(string) <= 100:             arr = list(string)             arr2 = arr.copy()             ...