CF1722B.Colourblindness

Vasya has a grid with $2$ rows and $n$ columns. He colours each cell red, green, or blue.

Vasya is colourblind and can't distinguish green from blue. Determine if Vasya will consider the two rows of the grid to be coloured the same.

瓦西娅有一个 $2$ 行 $n$ 列的网格。他将每个格子染成红色、绿色或蓝色。

瓦西娅是色盲，无法区分绿色和蓝色。请判断瓦西娅是否会认为该网格的两行颜色相同。

The input consists of multiple test cases. The first line contains an integer $t$ ($1 \leq t \leq 100$) — the number of test cases. The description of the test cases follows.

The first line of each test case contains an integer $n$ ($1 \leq n \leq 100$) — the number of columns of the grid.

The following two lines each contain a string consisting of $n$ characters, each of which is either R, G, or B, representing a red, green, or blue cell, respectively — the description of the grid.

输入包含多个测试用例。第一行包含一个整数 $t$（$1 \leq t \leq 100$），表示测试用例的数量。随后是各测试用例的描述。

每个测试用例的第一行包含一个整数 $n$（$1 \leq n \leq 100$），表示网格的列数。

接下来两行，每行包含一个长度为 $n$ 的字符串，其中每个字符为 R、G 或 B，分别代表红色、绿色或蓝色的格子——即该网格的描述。

For each test case, output "YES" if Vasya considers the grid's two rows to be identical, and "NO" otherwise.

You can output the answer in any case (for example, the strings "yEs", "yes", "Yes" and "YES" will be recognized as a positive answer).

对于每个测试用例，如果 Vasya 认为网格的两行相同，则输出 “YES”，否则输出 “NO”。

您可以以任意大小写形式输出答案（例如，字符串 “yEs”、“yes”、“Yes” 和 “YES” 均会被识别为肯定回答）。

In the first test case, Vasya sees the second cell of each row as the same because the second cell of the first row is green and the second cell of the second row is blue, so he can't distinguish these two cells. The rest of the rows are equal in colour. Therefore, Vasya will say that the two rows are coloured the same, even though they aren't.

In the second test case, Vasya can see that the two rows are different.

In the third test case, every cell is green or blue, so Vasya will think they are the same.

在第一个测试用例中，Vasya 认为每一行的第二个单元格是相同的，因为第一行的第二个单元格是绿色，而第二行的第二个单元格是蓝色，因此他无法区分这两个单元格。其余各列的颜色均相同。因此，Vasya 会认为这两行颜色相同，尽管实际上它们并不相同。

在第二个测试用例中，Vasya 能够看出这两行是不同的。

在第三个测试用例中，每个单元格都是绿色或蓝色，因此 Vasya 会认为它们是相同的。