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【动态规划】

#include <iostream>
#include <cstring>
#include <cstdio>
#include <cmath>
#include <algorithm>

using namespace std;

const int N = 2e5+10;
int a[N] , dp[N][2];
int n;
string str;

void solve()
{
	cin >> n >> str;
	
	str = "0" + str;

	for(int i = 1;i <= n;i ++)
		cin >> a[i];
	
	dp[0][0] = 0;
	dp[0][1] = 0;
	
	for(int i = 1;i <= n;i ++)
	{
		if(str[i] == '0')
			dp[i][0] = dp[i][1] = max(dp[i - 1][0] , dp[i - 1][1]);
		else
		{
			dp[i][0] = dp[i - 1][0] + a[i - 1];
			dp[i][1] = max(dp[i - 1][0] , dp[i - 1][1]) + a[i];
		}
	}
	
	cout << max(dp[n][0] , dp[n][1]) << endl;
}

int main()
{
	int T;
	cin >> T;
	
	while(T --)
		solve();
	
	return 0;
}