Оптимизация кода в задаче Максимальный балл не-победителя

inFile = open("input.txt", "r", encoding="utf8")
outFile = open("output.txt", "w", encoding="utf8")
reader = inFile.readlines()
cl9, cl10, cl11 = [], [], []
for i in reader:
    if i.split()[2] == "9":
        cl9.append(i.split()[3])
    elif i.split()[2] == "10":
        cl10.append(i.split()[3])
    elif i.split()[2] == "11":
        cl11.append(i.split()[3])
cl9.sort(key=int), cl10.sort(key=int), cl11.sort(key=int)   #9klass ['8', '10', '11', '11', '12']
new9, new10, new11 = 0, 0, 0                                #10klass ['15', '20', '20']
a, b, c = [], [], []                                        #11klass ['30', '30', '30', '35', '40']
for j in cl9:           #['8', '10', '11', '12']
    if new9 != j:
        a.append(j)
        new9 = j
for k in cl10:          #['15', '20']
    if new10 != k:
        b.append(k)
        new10 = k
for x in cl11:
    if new11 != x:
        c.append(x)     #['30', '35', '40']
        new11 = x
print(a[-2], b[-2], c[-2], file=outFile)
inFile.close()
outFile.close()

classes = {}
with open("input.txt") as inFile ,open("output.txt", "w") as outFile:
    for data in inFile.readlines():
        number,ball = data.split()[-2:]
        if number in classes:   
            classes[number].append(int(ball))
        else:
            classes[number] = [int(ball)]
    res = [ str(sorted(set(classes[key]))[-2]) for key in sorted(classes,key = int)]
    outFile.write(' '.join(res))

classes = {}
inFile = open('input.txt', 'r', encoding='utf8')
for line in inFile:
    grade, mark = line.split()[-2:]
 
    if grade in classes:
        if int(mark) in classes[grade]:
            pass
        else:
            classes[grade].append(int(mark))
    else:
        classes[grade] = [int(mark)]
inFile.close()
 
for i in classes:
    print(sorted(classes[i])[-2], end=' ')

marks9 = []
marks10 = []
marks11 = []
with open('input.txt', 'r', encoding='utf8') as file:
    for i in file.readlines():
        if int(i.split()[2]) == 9:
            marks9.append(int(i.split()[3]))
        elif int(i.split()[2]) == 10:
            marks10.append(int(i.split()[3]))
        else:
            marks11.append(int(i.split()[3]))
    marks9.sort(key=int, reverse=True)
    marks10.sort(key=int, reverse=True)
    marks11.sort(key=int, reverse=True)
    print(max(marks9[marks9.count(max(marks9)):]), end=' ')
    print(max(marks10[marks10.count(max(marks10)):]), end=' ')
    print(max(marks11[marks11.count(max(marks11)):]))