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[AtCoder]ABC-387|B - 9x9 Sum

2025/01/22に公開

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提出結果

def getInt():
    return int(input())


def main():
    X = getInt()

    a = []
    for i in range(1, 10):
        a += [x * i for x in range(1, 10)]

    c = a.count(X)

    print(sum(a) - c * X)


if __name__ == "__main__":
    main()

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