#include<stdio.h>
//#include<bits/stdc++.h>
#include<string.h>
#include<iostream>
#include<math.h>
#include<sstream>
#include<set>
#include<queue>
#include<map>
#include<vector>
#include<algorithm>
#include<limits.h>
#define inf 0x3fffffff
#define INF 0x3f3f3f3f
#define lson l,m,rt<<1
#define rson m+1,r,rt<<1|1
#define LL long long
#define ULL unsigned long long
using namespace std;
struct P
{
    int x,y;
} hehe[1000];
struct C
{
    int x,y;
} he[1000];
bool cmd1(P a,P b)
{
    return a.x<b.x;
}
bool cmd2(C a,C b)
{
    if(a.x==b.x)
    {
        return a.y<b.y;
    }
    else
    {
        return a.x>b.x;
    }
}
int main()
{
    int n,m;
    int t;
    int i,j;
    while(cin>>t)
    {
        while(t--)
        {
            int ans=0;
            cin>>n>>m;
            for(i=0; i<n; i++)
            {
                cin>>hehe[i].x>>hehe[i].y;
            }
            for(i=0; i<m; i++)
            {
                cin>>he[i].x>>he[i].y;
            }
            sort(hehe,hehe+n,cmd1);
            sort(he,he+m,cmd2);
            for(i=0; i<n; i++)
            {
                for(j=0; j<m; j++)
                {
                    if(hehe[i].x>=he[j].y&&he[j].x!=0)
                    {
                        he[j].x=0;
                        break;
                    }
                }
            }
            for(i=0; i<m; i++)
            {
                ans+=he[i].x;
            }
            cout<<ans<<endl;
        }
    }
    return 0;
}