［AtCoder］ABC-201｜A - Tiny Arithmetic Sequence

設問ページ

• 🔗ABC-201 A - Tiny Arithmetic Sequence

提出結果

def getIntList():
    return list(map(int, input().split()))


def main():
    l = getIntList()
    a, b, c = sorted(l)

    print('Yes' if b * 2 == a + c else 'No')


if __name__ == "__main__":
    main()