#include<bits/stdc++.h>
#define mp make_pair
#define mt make_tuple
#define ff first
#define ss second
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll INFL = (1LL<<62)-1;
const int INF = (1<<30)-1;
const double EPS = 1e-7;
const int MOD = 1e9 + 7;
const int MAXN = 1e6+1;
struct specs{
ll c, f, v;
};
int main(){
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int n;
cin >> n;
vector<specs> comp(n);
for(int i = 0; i < n; i++)
cin >> comp[i].c >> comp[i].f >> comp[i].v;
int m;
cin >> m;
vector<specs> order(m);
for(int i = 0; i < m; i++)
cin >> order[i].c >> order[i].f >> order[i].v;
sort(comp.begin(), comp.end(),[&](specs a, specs b){
return a.f > b.f;
});
sort(order.begin(), order.end(),[&](specs a, specs b){
return a.f > b.f;
});
vector<ll> dp(n*50+1,-INFL);
dp[0] = 0;
int ptr = 0;
ll resp = 0;
for(int i = 0; i < m; i++){
while(ptr < n && comp[ptr].f >= order[i].f){
for(int j = n*50; j >= comp[ptr].c; j--){
dp[j] = max(dp[j],dp[j-comp[ptr].c] -comp[ptr].v);
}
ptr++;
}
//cout << i << ":\n";
for(int j = 0; j <= n*50-order[i].c; j++){
dp[j] = max(dp[j], dp[j+order[i].c] + order[i].v);
//cout << (dp[j] < -INF ? "-INF" : to_string(dp[j])) << ' ';
resp = max(resp,dp[j]);
}
//cout << '\n';
}
cout << resp << '\n';
return 0;
}
