#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll INF = 1e18;
const int MAX = 1e6+2;
ll A[2][MAX], T[2][MAX], P[2][MAX];
int B[2][MAX];
struct Seg{
vector<ll> S, O;
vector<bool> lazy;
int cap;
void init(int n){
for(cap = 1; cap < n; cap*=2);
S.assign(2*cap, -INF);
O.assign(2*cap, 0);
lazy.assign(2*cap, false);
}
void push(int i){
if(lazy[i]){
S[2*i] += O[i];
O[2*i] += O[i];
lazy[2*i] = true;
S[2*i+1] += O[i];
O[2*i+1] += O[i];
lazy[2*i+1] = true;
O[i] = 0;
lazy[i] = false;
}
}
void add(int l, int r, ll v, int a, int b, int i){
if(l <= a && b <= r){
S[i] += v;
O[i] += v;
lazy[i] = true;
}
else if(b < l || r < a);
else{
push(i);
int m = (a+b)/2;
add(l, r, v, a, m, 2*i);
add(l, r, v, m+1, b, 2*i+1);
S[i] = max(S[2*i], S[2*i+1]);
}
}
void add(int l, int r, ll v){add(l, r, v, 1, cap, 1);}
void upd(int p, ll v, int a, int b, int i){
if(a == b) S[i] = v;
else{
push(i);
int m = (a+b)/2;
if(p <= m) upd(p, v, a, m, 2*i);
else upd(p, v, m+1, b, 2*i+1);
S[i] = max(S[2*i], S[2*i+1]);
}
}
void upd(int p, ll v){upd(p, v, 1, cap, 1);}
ll qry(int l, int r, int a, int b, int i){
if(l <= a && b <= r) return S[i];
if(b < l || r < a) return -INF;
push(i);
int m = (a+b)/2;
return max(qry(l, r, a, m, 2*i), qry(l, r, m+1, b, 2*i+1));
}
ll qry(int l, int r){return qry(l, r, 1, cap, 1);}
};
int main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
int n, m;
cin >> n >> m;
for(int i = 0; i < 2; i++){
A[i][0] = P[i][0] = 0;
for(int j = 1; j <= (i==0?n:m); j++){
cin >> A[i][j] >> T[i][j] >> P[i][j];
A[i][j] += A[i][j-1];
}
}
for(int i = 0; i < 2; i++){
B[i][0] = 0;
int x = (i==0?m:n);
for(int j = 1; j <= (i==0?n:m); j++){
if(A[i][j] > T[i][j]) B[i][j] = -1;
else if(A[i][j]+A[1-i][x] <= T[i][j]) B[i][j] = x;
else B[i][j] = (int)(upper_bound(A[1-i], A[1-i]+x, T[i][j]-A[i][j])-A[1-i]-1);
}
}
n++;
B[0][n] = m;
P[0][n] = 0;
n++;
vector<pair<int, int>> byH;
for(int i = 1; i < n; i++) if(B[0][i] >= 0) byH.emplace_back(B[0][i], i);
sort(byH.begin(), byH.end());
ll sum = 0;
for(int i = 0; i < n; ++i){
if(B[0][i] >= 0) sum += P[0][i];
}
Seg seg; seg.init(n);
seg.upd(1, sum);
vector<int> todo;
int lastH = 0;
for(auto [h, i] : byH){
if(lastH != h){
for(int j : todo){
seg.add(1, j, -P[0][j]);
}
todo.clear();
for(int j = lastH+1; j <= h; j++){
if(B[1][j] >= 0){
seg.add(1, B[1][j]+1, P[1][j]);
}
}
}
ll dp = seg.qry(1, i);
seg.upd(i+1, dp);
lastH = h;
todo.push_back(i);
}
ll ans = seg.qry(n, n);
cout << ans << "\n";
}
