［AtCoder］ABC-309｜A - Nine

設問ページ

• 🔗ABC-309 A - Nine

提出結果

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


def main():
    a, b = getIntMap()

    print('Yes' if b - a == 1 and a % 3 != 0 else 'No')


if __name__ == "__main__":
    main()