#include <bits/stdc++.h>
#define LL long long
#define SZ(x) ((int)(x).size())
#define ALL(x) (x).begin(),(x).end()
#define REP(i,n) for(int i=0;i<n;i++)
#define REV(i,n) for(int i=n-1;i>=0;i--)
#define FOR(i,a,b) for(int i=a;i<=b;i++)
#define pri(a) cout<<a<<endl
#define prii(a,b) cout<<a<<" "<<b<<endl
using namespace std;
int main()
{
int T,n, hi,x;
string s;
char ch;
cin>>T;
while(T--)
{
map <char, int> mp;
cin>>hi;
while(hi--)
{
cin>>ch>>n;
mp[ch] = n;
}
int cnt = 0;
cin>>x;
getchar();
while(x--)
{
getline(cin,s);
REP(i,SZ(s))
{
cnt += mp[ s[i] ];
}
}
double xx = (double) (cnt*1.0/100);
cout << fixed << setprecision(2) << xx << '$' << "\n";
}
return 0;
}
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