#include<stdio.h>
#include<string.h>
 
int main()
{
	int i, j, n, k, m, value[130], pay, dollar, cent;
	char c, s[10010];
 
	scanf("%d", &n);
 
	for(i=0; i<n; i++)
	{
		memset(value, 0, sizeof(value));
		scanf("%d", &k);
 
		for(j=0; j<k; j++)
		{
			getchar();
			scanf(" %c", &c);
			scanf("%d", &value[c]);
		}
 
		scanf("%d", &m);
		getchar();
 
		j=1;
		pay=0;
		while(j<=m)
		{
			gets(s);
			k=0;
 
			while(s[k]!='\0')
			{
				pay+=value[s[k]];
				k++;
			}
 
			j++;
		}
 
		dollar = pay/100;
		cent = pay%100;
 
		if(cent/10 > 0)
		{
			if(cent%10!=0)
				printf("%d.%d$\n", dollar, cent);
			else
				printf("%d.%d0$\n", dollar, cent);
		}
		else
			printf("%d.0%d$\n", dollar, cent);
	}
}

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