Problem:
Score : 400 points

Problem Statement

There are two persons, numbered 0 and 1, and a variable x whose initial value is 0.
The two persons now play a game.
The game is played in N rounds. The following should be done in the i-th round (1 \leq i \leq N):

Person S_i does one of the following:

Replace x with x \oplus A_i, where \oplus represents bitwise XOR.

Do nothing.

Person 0 aims to have x=0 at the end of the game, while Person 1 aims to have x \neq 0 at the end of the game.

Determine whether x becomes 0 at the end of the game when the two persons play optimally.

Solve T test cases for each input file.

Constraints

1 \leq T \leq 100

1 \leq N \leq 200

1 \leq A_i \leq 10^{18}

S is a string of length N consisting of 0 and 1.

All numbers in input are integers.

Input

Input is given from Standard Input in the following format.
The first line is as follows:

T

Then, T test cases follow.
Each test case is given in the following format:

N
A_1 A_2 \cdots A_N
S

Output

For each test case, print a line containing 0 if x becomes 0 at the end of the game, and 1 otherwise.

Sample Input 1

3
2
1 2
10
2
1 1
10
6
2 3 4 5 6 7
111000

Sample Output 1

1
0
0

In the first test case, if Person 1 replaces x with 0 \oplus 1=1, we surely have x \neq 0 at the end of the game, regardless of the choice of Person 0.

In the second test case, regardless of the choice of Person 1, Person 0 can make x=0 with a suitable choice.

Solution in Rust (1.42.0) (judge verdict: Time Limit Exceeded)

use proconio::input;

fn proc_r(depth: usize, a: &Vec<usize>, v: &Vec<char>, result: usize) -> bool {
	if depth == a.len() {
		if result == 0 {
			return true;
		}
		else {
			return false;
		}
	}
	match v[depth] {
		'0' => {	// 人0のターン
			//xorする
			let r1 = proc_r(depth+1, a, v, result^a[depth]);
			if r1 {
				return true;
			}
			//何もしない
			let r2 = proc_r(depth+1, a, v, result);
			return r2;
		},
		_ => {		// 人1のターン
			//xorする
			let r1 = proc_r(depth+1, a, v, result^a[depth]);
			if !r1 {
				return false;
			}
			//何もしない
			let r2 = proc_r(depth+1, a, v, result);
			return r2;
		},
	}
}

fn main() {
	input!(t: usize);

	for _i in 0..t {
		input!(n: usize);
		input!(a: [usize; n]);
		input!(s: String);

		let mut n = n;
		let mut a = a;
		let mut v: Vec<char> = s.chars().collect();

		while v[n-1] == '1' {
			if a[n-1] == 0 {
				v.pop();
				a.pop();
				n -= 1;
				if n == 0 {
					println!("0");
					return;
				}
			}
			else {
				println!("1");
				return;	
			}
		}

		if proc_r(0, &a, &v, 0) {
			println!("0");
		}
		else {
			println!("1");
		}
	}
}