#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define SZ(x) (int) x.size()
int main() {
ios_base::sync_with_stdio(0), cin.tie(0);
int n, m;
cin >> n >> m;
array<ll, 3> a[n + 1], b[m + 1];
ll prfa[n + 1]{}, prfb[m + 1]{};
for (int i = 1; i <= n; i++) {
cin >> a[i][0] >> a[i][1] >> a[i][2];
prfa[i] = prfa[i - 1] + a[i][0];
}
for (int i = 1; i <= m; i++) {
cin >> b[i][0] >> b[i][1] >> b[i][2];
prfb[i] = prfb[i - 1] + b[i][0];
}
ll dp[n + 1][m + 1]{};
for (int i = 0; i <= n; i++) {
for (int j = 0; j <= m; j++) {
if (i == 0 && j == 0) continue;
// cout << i << ' ' << j << endl;
dp[i][j] = -1e18;
if (i) {
dp[i][j] = max(dp[i][j], dp[i - 1][j] + (prfa[i] + prfb[j] <= a[i][1]) * a[i][2]);
}
if (j) {
dp[i][j] = max(dp[i][j], dp[i][j - 1] + (prfa[i] + prfb[j] <= b[j][1]) * b[j][2]);
}
}
}
cout << dp[n][m] << '\n';
return 0;
}
