［AtCoder］ABC-069｜A - K-City

設問ページ

• 🔗ABC-069 A - K-City

提出結果

def getIntMap():
    return map(int, input().split())


def main():
    n, m = getIntMap()

    print((n - 1) * (m - 1))


if __name__ == "__main__":
    main()