#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<algorithm>
#include<vector>
#include<set>
#include<map>
#include<stack>
#include<queue>
using namespace std;
#define mem(x,y) memset(x,y,sizeof(x))
#define pb push_back
#define bug puts("===========");
#define REP(i,n) for(int i=0;i<n;i++)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define ALL(A) A.begin(), A.end()
#define T_T for(int _=RD(),test=1;test<=_;test++)
typedef long long ll;
typedef pair<ll ,ll> pii;
#define CHG ch=getchar()
#define FRD x=bo=0; for(CHG;ch<'0'||ch>'9';CHG) if(ch=='-')bo=1;
#define FR2 for(;ch>='0'&&ch<='9';x=(x<<1)+(x<<3)+ch-'0',CHG);
char ch; int bo;
inline bool blank(char ch){return ch==' '||ch=='\n'||ch=='\r'||ch=='\t';}
inline void RD(int &x){ FRD FR2 if (bo)x=-x; }
inline void RD(ll &x){ FRD FR2 if (bo)x=-x; }
inline ll RD(){ ll x; RD(x); return x; }
inline void RD(char *s){///scanf %s
    for (CHG;blank(ch);CHG);
    for (;!blank(ch);CHG)*s++=ch; *s=0;
}
inline void RD(char &c){for(CHG;blank(c);CHG);}
template<class T> inline void OT(T x){
    static char buf[20];
    char *p1=buf;if (!x)*p1++='0';if (x<0)putchar('-'),x=-x;
    while(x)*p1++=x%10+'0',x/=10;
    while(p1--!=buf)putchar(*p1);
}
inline void pe(){puts("");}//输出回车
inline void pk(){putchar(' ');}//输出空格
const double eps=1e-8;
const ll inf=2e9;
const int maxn=1e4+70;
const ll mod =100000007;
/*======================================*/
map<string,int>mp;
priority_queue<pii> q;
int ct[110];
int main()
{
    T_T{
        int n=RD();
        mp.clear();
        while(!q.empty())q.pop();
        char s[14];
        int a;
        int cnt=1;
        mem(ct,0);
        REP(i,n)
        {
            scanf("%s %d",s,&a);
            int k=mp[s];
            if(k==0)k=mp[s]=cnt++;
            q.push(pii(a,k));
        }
        ll ans=0;
        while(!q.empty())
        {
            pii p=q.top();
            q.pop();
            int k=p.second;
            if(ct[k]<2)
            {
                ct[k]++;
                ans+=p.first;
            }
        }
        OT(ans),pe();
    }
    return 0;
}