[2019 KAIST RUN Spring] A Plus Equals B - 题目

内存限制：1024 MiB 时间限制：1000 ms 标准输入输出

题目类型：VJudge（洛谷）评测方式：VJudge

上传者：匿名

提交提交记录统计讨论题解

is a problem used to test one's basic knowledge for competitive programming. Here is yet another boring variation of it.

You have two integers, and . You want to make them equal. To do so, you can perform several steps, where each step is one of the following:

Unfortunately, is a hard problem for us, so you are allowed to make at most 5000 steps.

Two integers are given. ().

In the first line, print a single integer () denoting the number of steps.

In next lines, print one of the following strings to denote your desired operation: +=, +=, +=, or +=.

Any sequence of steps that yields the desired result will be judged correct.

2 3

4
B+=B
B+=A
A+=A
A+=A

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#215694. [2019 KAIST RUN Spring] A Plus Equals B