1：https://www.lanqiao.cn/problems/497/learning/

取整函数（遗忘）https://blog.csdn.net/u010087338/article/details/121598961

另外format格式控制能够避免结果省略0的问题。

第一次错误：输出顺序问题

mark = []
peopleNumber = int(input())
markTotal = 0
for i in range (peopleNumber):
  markInput = int(input())
  markTotal += markInput
  mark.append(markInput)
mark.sort()
print(mark[0])
print(mark[peopleNumber-1])
# a = round(markTotal/peopleNumber,2)
# print(a)
print("{:.2f}".format(markTotal/peopleNumber))

mark = []
peopleNumber = int(input())
markTotal = 0
for i in range (peopleNumber):
  markInput = int(input())
  markTotal += markInput
  mark.append(markInput)
mark.sort()
print(mark[peopleNumber-1])
print(mark[0])
# a = round(markTotal/peopleNumber,2)
# print(a)
print("{:.2f}".format(markTotal/peopleNumber))

2.https://www.lanqiao.cn/problems/819/learning/

暴力拆解，主要是逻辑问题。

python中not、and、or的优先级与详细用法：

https://blog.csdn.net/m0_51284422/article/details/109441190

import os
import sys
answer = 0
data = ["VLPWJVVNNZSWFGHSFRBCOIJTPYNEURPIGKQGPSXUGNELGRVZAG",\
"SDLLOVGRTWEYZKKXNKIRWGZWXWRHKXFASATDWZAPZRNHTNNGQF",\
"ZGUGXVQDQAEAHOQEADMWWXFBXECKAVIGPTKTTQFWSWPKRPSMGA",\
"BDGMGYHAOPPRRHKYZCMFZEDELCALTBSWNTAODXYVHQNDASUFRL",\
"YVYWQZUTEPFSFXLTZBMBQETXGXFUEBHGMJKBPNIHMYOELYZIKH",\
"ZYZHSLTCGNANNXTUJGBYKUOJMGOGRDPKEUGVHNZJZHDUNRERBU",\
"XFPTZKTPVQPJEMBHNTUBSMIYEGXNWQSBZMHMDRZZMJPZQTCWLR",\
"ZNXOKBITTPSHEXWHZXFLWEMPZTBVNKNYSHCIQRIKQHFRAYWOPG",\
"MHJKFYYBQSDPOVJICWWGGCOZSBGLSOXOFDAADZYEOBKDDTMQPA",\
"VIDPIGELBYMEVQLASLQRUKMXSEWGHRSFVXOMHSJWWXHIBCGVIF",\
"GWRFRFLHAMYWYZOIQODBIHHRIIMWJWJGYPFAHZZWJKRGOISUJC",\
"EKQKKPNEYCBWOQHTYFHHQZRLFNDOVXTWASSQWXKBIVTKTUIASK",\
"PEKNJFIVBKOZUEPPHIWLUBFUDWPIDRJKAZVJKPBRHCRMGNMFWW",\
"CGZAXHXPDELTACGUWBXWNNZNDQYYCIQRJCULIEBQBLLMJEUSZP",\
"RWHHQMBIJWTQPUFNAESPZHAQARNIDUCRYQAZMNVRVZUJOZUDGS",\
"PFGAYBDEECHUXFUZIKAXYDFWJNSAOPJYWUIEJSCORRBVQHCHMR",\
"JNVIPVEMQSHCCAXMWEFSYIGFPIXNIDXOTXTNBCHSHUZGKXFECL",\
"YZBAIIOTWLREPZISBGJLQDALKZUKEQMKLDIPXJEPENEIPWFDLP",\
"HBQKWJFLSEXVILKYPNSWUZLDCRTAYUUPEITQJEITZRQMMAQNLN",\
"DQDJGOWMBFKAIGWEAJOISPFPLULIWVVALLIIHBGEZLGRHRCKGF",\
"LXYPCVPNUKSWCCGXEYTEBAWRLWDWNHHNNNWQNIIBUCGUJYMRYW",\
"CZDKISKUSBPFHVGSAVJBDMNPSDKFRXVVPLVAQUGVUJEXSZFGFQ",\
"IYIJGISUANRAXTGQLAVFMQTICKQAHLEBGHAVOVVPEXIMLFWIYI",\
"ZIIFSOPCMAWCBPKWZBUQPQLGSNIBFADUUJJHPAIUVVNWNWKDZB",\
"HGTEEIISFGIUEUOWXVTPJDVACYQYFQUCXOXOSSMXLZDQESHXKP",\
"FEBZHJAGIFGXSMRDKGONGELOALLSYDVILRWAPXXBPOOSWZNEAS",\
"VJGMAOFLGYIFLJTEKDNIWHJAABCASFMAKIENSYIZZSLRSUIPCJ",\
"BMQGMPDRCPGWKTPLOTAINXZAAJWCPUJHPOUYWNWHZAKCDMZDSR",\
"RRARTVHZYYCEDXJQNQAINQVDJCZCZLCQWQQIKUYMYMOVMNCBVY",\
"ABTCRRUXVGYLZILFLOFYVWFFBZNFWDZOADRDCLIRFKBFBHMAXX"]
for i in range(30):
  for j in range(50):
    for x in range(30):
      for y in range(50):
        if (((i==x and y>j) or (x>i and y==j) or(abs(x-i)==abs(y-j))) and (not(x<=i and y<=j))and (data[x][y]>data[i][j])):
          answer += 1
print(answer)

3.https://www.lanqiao.cn/problems/254/learning/

a,b=map(int, input().split())
print(a+b)

 主要是map方法，实现映射。

4.https://www.lanqiao.cn/problems/646/learning/

数论。。。

找素数方法：

import os
import sys
import math
# 请在此输入您的代码
num = [2]
for i in range(2,2090):  #  搜索素数
    for j in range(2,int(math.sqrt(i)+1)):  # 或者{for j in range(2, i):}
        if i % j == 0:
            break
    else:  #得让i%j==0将j在[2,i)中判断完才能说明i是素数
        num.append(i)


for i in range(2,200):  #先找到首相
    for j in range(200,220):  #找到公差
        a = 0
        for k in range(i+j,i+11*j,j):  #将找到的首相和公差进行判断，如果其中的每一项都满足条件，则找到公差
            if k in num :
                a+=1
        if a==9:
             print(j)