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#1

with open('27-A(2).txt', 'r', encoding='utf-8') as file:
    n = int(file.readline().strip())
    data = [int(j) for j in [i.strip() for i in file.readlines()] if j != '']
    c = 0
    for i in range(len(data)):
        for j in range(len(data)):
            if i != j:
                r = data[i] * data[j]
                if r % 1000000 == 0 and r%(10**(n+1))!=0:
                    c += 1
    print(c // 2)

#2

with open('27-45792A.txt', 'r', encoding='utf-8') as file:
    n = int(file.readline().strip())
    data = [int(j) for j in [i.strip() for i in file.readlines()] if j != '']
    c = 0
    for i in range(len(data)):
        for j in range(i+1,len(data)):
            r = data[i] * data[j]
            s = (data[i]%11 + data[j]%11)%11
            if r % 2310 == 0 and s == 0:
                c += 1
    print(c)

#3

with open('27-45792A.txt', 'r', encoding='utf-8') as file:
    n = int(file.readline().strip())
    data = [int(j) for j in [i.strip() for i in file.readlines()] if j != '']
    c = 0
    for i in range(len(data)):
        for j in range(i+1,len(data)):
            r = data[i] * data[j]
            s = (data[i]%11 + data[j]%11)%11
            if r % 2310 == 0 and s == 0:
                c += 1
    print(c)

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27-45792A.txt
27-A(2).txt

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