#include <bits/stdc++.h>
#define file(name) freopen(name".inp" , " r " , stdin);freopen(name".out" , " w " , stdout);
#define faster ios_base :: sync_with_stdio(false) ; cin.tie(0) ; cout.tie(0) ;
#define pii pair < int , int >
#define fi first
#define se second
#define mii map< int , int>
#define reset(a,val) memset(a ,val , sizeof(a) )
#define count_bit(i) __builtin_popcountll(i)
#define mask(i) ((1LL << (i)))
#define status(x, i) (((x) >> (i)) & 1)
#define set_on(x, i) ((x) | mask(i))
#define set_off(x, i) ((x) & ~mask(i))
#define endl '\n'
#define ll long long
const int maxn1 = 1e5 + 6;
const int maxn2 = 1e5 + 6;
const int mod= 1e9 + 7;
const ll INFLL= 3e18 + 5;
const int INF = 1e9 + 5 ;
const int LOG = 20 ;
template <class T> inline T sqr(T x) { return x * x; };
template <class T> inline int Power(T x, int y)
{ if (!y) return 1; if (y & 1) return sqr(Power(x, y / 2)) % mod * x % mod; return sqr(Power(x, y / 2)) % mod; }
template<class T> bool minimize(T& a, const T& b) { return b < a ? a = b, 1 : 0; }
template<class T> bool maximize(T& a, const T& b) { return a < b ? a = b, 1 : 0; }
inline int gcd(int x, int y)
{ return y ? gcd(y , x % y) : x;}
inline int lcm(int x, int y) { return x * y / gcd(x, y); }
using namespace std;
struct dl{
bool type ; int c , f , v;
} a[maxn1];
int n , q;
ll dp[maxn2];
ll new_dp[maxn2];
void solve()
{
cin >> n;
for (int i = 1 ; i <= n ; ++i)
{
cin >> a[i].c >> a[i].f >> a[i].v;
a[i].type = 0;
}
cin >> q;
for (int i = 1 ; i <= q ; ++i)
{
cin >> a[i + n].c >> a[i + n].f >> a[i + n].v;
a[i + n].type = 1;
}
sort(a + 1 , a + n + q + 1 , [&](dl x , dl y)
{
if (x.f != y.f) return x.f < y.f;
return x.type > y.type;
}
);
for (int i = 1 ; i <= n + q ; ++i)
{
// memset(new_dp , -0x3f , sizeof new_dp);
for (int j = 0 ; j <= 50 * n - a[i].c ; ++j)
{
maximize(new_dp[j], dp[j]);
if (a[i].type == 1)
{
new_dp[j + a[i].c] = max(new_dp[j + a[i].c] , dp[j] + a[i].v);
}
else
if (j != 0)
{
new_dp[max(0 , j - a[i].c)] = max(new_dp[max(0 , j - a[i].c)] , dp[j] - a[i].v);
}
}
for (int j = 0 ; j <= 50 * n ; ++j)
dp[j] = new_dp[j];
}
cout << dp[0] << endl;
}
int32_t main()
{
faster;
// file("txt");
// int t ; cin >> t ; while (t--)
solve();
return 0;
}
