#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define mem(a) memset(a,0,sizeof(a))
#define mp(x,y) make_pair(x,y)
const int INF = 0x3f3f3f3f;
const ll INFLL = 0x3f3f3f3f3f3f3f3fLL;
inline ll read(){
    ll x=0,f=1;char ch=getchar();
    while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
    while(ch>='0'&&ch<='9'){x=x*10+ch-'0';ch=getchar();}
    return x*f;
}
//////////////////////////////////////////////////////////////////////////
const int maxn = 1e5+10;

map<string,int> mp;
map<string,int> minn;
map<string,int> maxx;
int ans;

int main(){
    string s; int n,v;
    int T = read();
    while(T--){
        ans = 0;
        mp.clear(); minn.clear(); maxx.clear();
        n = read();
        for(int i=1; i<=n; i++){
            cin >> s >> v;
            if(mp[s] < 2){
                mp[s]++;
                ans+=v;
                // cout << "aa " << mp[s] << endl;
                if(mp[s]!=1) minn[s] = min(minn[s],v);
                else minn[s] = v;
                maxx[s] = max(maxx[s],v);
            }else{
                ans -= min(minn[s],v);
                ans += v;
                
                int t = maxx[s];
                maxx[s] = max(maxx[s],v);
                minn[s] = max(minn[s],v);
                if(minn[s]==maxx[s])
                    minn[s] = t;
                // cout << "hh " << minn[s] << " " << maxx[s] << endl;
            }
        }

        cout << ans << endl;
    }

    return 0;
}