QOJ.ac

QOJ

시간 제한: 2.0 s 메모리 제한: 1024 MB 총점: 100 해킹 가능 ✓

#17260. 乘法的艺术

통계

设 $x$ 是一个在 $r$ 进制下由 $n$ 个相同的数字 $a$ 组成的整数。同时,设 $y$ 是一个在 $r$ 进制下由 $m$ 个相同的数字 $b$ 组成的整数。

求数字 $z = x \cdot y$ 在 $r$ 进制下的数位之和,并以 $r$ 进制的形式输出该数位之和。

输入格式

第一行包含一个整数 $t$ ($1 \le t \le 10\,000$),表示测试用例的数量。接下来是每个测试用例的描述。

每个测试用例占一行,包含五个整数 $n, m, a, b, r$ ($n, m \ge 1, n + m \le 10^{18}$,$1 \le a, b < r \le 10$)。

输出格式

对于每个测试用例,在单独的一行中输出一个整数:表示以 $r$ 进制表示的该问题的答案。

样例

输入样例 1

5
2 3 6 6 10
6 11 7 7 10
20 25 2 6 10
13 37 1 1 2
57 1 4 2 8

输出样例 1

27
84
204
100101
71

说明

在第一个测试用例中,我们有 $x = 66_{10}$,$y = 666_{10}$,$z = 43\,956_{10}$。$z$ 的数位之和为 $27_{10}$。

在第四个测试用例中,二进制表示下 $z$ 的数位之和为 $37_{10} = 100101_2$。

Discussions

About Discussions

The discussion section is only for posting: General Discussions (problem-solving strategies, alternative approaches), and Off-topic conversations.

This is NOT for reporting issues! If you want to report bugs or errors, please use the Issues section below.

Open Discussions 0
No discussions in this category.

Issues

About Issues

If you find any issues with the problem (statement, scoring, time/memory limits, test cases, etc.), you may submit an issue here. A problem moderator will review your issue.

Guidelines:

  1. This is not a place to publish discussions, editorials, or requests to debug your code. Issues are only visible to you and problem moderators.
  2. Do not submit duplicated issues.
  3. Issues must be filed in English or Chinese only.
Active Issues 0
No issues in this category.
Closed/Resolved Issues 0
No issues in this category.