import java.io.*;
import java.util.*;
public class clo {
public static void main(String[] args) throws IOException {
BufferedReader scan = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer l1 = new StringTokenizer(scan.readLine());
int n = Integer.parseInt(l1.nextToken());
int[][] arr1 = new int[n][3];
for (int i = 0;i<n;i++) {
StringTokenizer st = new StringTokenizer(scan.readLine());
arr1[i][0] = Integer.parseInt(st.nextToken()); arr1[i][1] = Integer.parseInt(st.nextToken()); arr1[i][2] = Integer.parseInt(st.nextToken());
}
StringTokenizer l2 = new StringTokenizer(scan.readLine());
int m = Integer.parseInt(l2.nextToken());
int[][] arr2 = new int[m][3];
for (int i = 0;i<m;i++) {
StringTokenizer st = new StringTokenizer(scan.readLine());
arr2[i][0] = Integer.parseInt(st.nextToken()); arr2[i][1] = Integer.parseInt(st.nextToken()); arr2[i][2] = Integer.parseInt(st.nextToken());
}
int num = n+m;
int[][] arr = new int[num][3];
for (int i = 0;i<n;i++) {
arr[i][0] = arr1[i][0]; arr[i][1] = arr1[i][1]; arr[i][2] = (-1)*arr1[i][2];
}
for (int i = 0;i<m;i++) {
arr[i+n][0] = (-1)*arr2[i][0]; arr[i+n][1] = arr2[i][1]; arr[i+n][2] = arr2[i][2];
}
Arrays.sort(arr, (a,b)->b[1]!=a[1] ? b[1]-a[1] : a[2]-b[2]);
//printMat(arr);
//Now just classic Knapsack
int maxC = n*50; //Max number of cores possible
long[] dp1 = new long[maxC]; long[] dp2 = new long[maxC];
Arrays.fill(dp1,Long.MIN_VALUE);
Arrays.fill(dp2,Long.MIN_VALUE);
dp1[0] = 0; dp2[0] = 0;
if (arr[0][0]>=0)
dp1[arr[0][0]] = arr[0][2];
for (int i = 1;i<num;i++) {
if (arr[i][0]>=0) {
dp2[arr[i][0]] = arr[i][2];
}
for (int j = 0;j<maxC;j++) {
dp2[j] = Math.max(dp2[j],dp1[j]);
if (maxC>j-arr[i][0]&&j-arr[i][0]>=0) {
if (dp1[j-arr[i][0]]!=Long.MIN_VALUE) {
dp2[j] = Math.max(dp2[j], dp1[j - arr[i][0]] + arr[i][2]);
}
}
}
for (int j = 0;j<maxC;j++) {
dp1[j] = dp2[j];
if (j==0)
dp2[0] = 0;
else
dp2[j] = Long.MIN_VALUE;
}
}
long ans = 0;
for (int j = 0;j<maxC;j++) {
ans = Math.max(ans,dp1[j]);
}
System.out.println(ans);
}
public static void printMat (int[][] arr) {
for (int i = 0;i<arr.length;i++) {
for (int j = 0;j<arr[0].length;j++) {
System.out.print(arr[i][j]+" ");
}
System.out.println();
}
}
public static void printMat (long[][] arr) {
for (int i = 0;i<arr.length;i++) {
for (int j = 0;j<arr[0].length;j++) {
System.out.print(arr[i][j]+" ");
}
System.out.println();
}
}
}
