You are analyzing an infinite grid with coordinates $$$(X, Y)$$$ (specifically, the cell immediately above $$$(0, 0)$$$ is $$$(0, 1)$$$, and the cell immediately on the right of $$$(0, 0)$$$ is $$$(1, 0)$$$). Initially, only the cell at $$$(0, 0)$$$ is black.
You are given a string $$$a_1a_2 \ldots a_n$$$ of length $$$n$$$ consisting of characters $$$\texttt{"4"}$$$ and $$$\texttt{"8"}$$$, which describes $$$n$$$ expansion operations. For each $$$i$$$ from $$$1$$$ to $$$n$$$, the following happens for all cells simultaneously:
Is the cell $$$(x, y)$$$ black at the end of the process?
Each test contains multiple test cases. The first line contains the number of test cases $$$t$$$ ($$$1 \le t \le 10^4$$$). The description of the test cases follows.
The first line of each test case contains three integers $$$n$$$, $$$x$$$, $$$y$$$ ($$$1 \le n \le 2 \cdot 10^5, -10^9 \le x, y \le 10^9$$$) — the number of expansion operations, and the $$$x$$$ and $$$y$$$ coordinates of the cell you are interested in, respectively.
The second line of each test case contains a string $$$s$$$ of length $$$n$$$ consisting of characters $$$\texttt{"4"}$$$ and $$$\texttt{"8"}$$$ — the types of expansion operations.
It is guaranteed that the sum of $$$n$$$ over all test cases does not exceed $$$2 \cdot 10^5$$$.
For each test case, output $$$\texttt{YES}$$$ if the cell $$$(x, y)$$$ is black after the expansion operations described by the string $$$s$$$, and $$$\texttt{NO}$$$ otherwise.
The judge is case-insensitive (for example, $$$\texttt{YES}$$$, $$$\texttt{Yes}$$$, $$$\texttt{yes}$$$, $$$\texttt{yEs}$$$ will all be recognized as positive answers).
63 3 38884 5 148844 3 -348847 -7 -5488488410 0 048848848881 1 14
YESNOYESNOYESNO
The first three test cases are illustrated below:
In the first test case, after the expansion operations in the string $$$\texttt{"888"}$$$, cell $$$(3, 3)$$$ is black, so the answer is $$$\texttt{YES}$$$.
In the second test case, cell $$$(5, 1)$$$ is white after the expansion operations in the string $$$\texttt{"4884"}$$$.
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