// Hallelujah, praise the one who set me free
// Hallelujah, death has lost its grip on me
// You have broken every chain, There's salvation in your name
// Jesus Christ, my living hope
#include <bits/stdc++.h>
using namespace std;
template <class T>
inline bool mnto(T& a, T b) {return a > b ? a = b, 1 : 0;}
template <class T>
inline bool mxto(T& a, T b) {return a < b ? a = b, 1: 0;}
#define REP(i, s, e) for (int i = s; i < e; i++)
#define RREP(i, s, e) for (int i = s; i >= e; i--)
typedef long long ll;
typedef long double ld;
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
typedef tuple<int, int, int> iii;
#define ALL(_a) _a.begin(), _a.end()
#define pb push_back
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;
typedef vector<iii> viii;
#ifndef DEBUG
#define cerr if (0) cerr
#endif
const int INF = 1000000005;
const ll LINF = 1000000000000000005ll;
const int MAXN = 1000005;
int n, m;
ll a[MAXN], s[MAXN], p[MAXN];
ll b[MAXN], t[MAXN], q[MAXN];
ll ans;
int main() {
cin >> n >> m;
REP (i, 1, n + 1) {
cin >> a[i] >> s[i] >> p[i];
}
ll sm = 0, res = 0;
REP (i, 1, m + 1) {
cin >> b[i] >> t[i] >> q[i];
sm += b[i];
res += q[i];
}
ans = 0;
int j = m;
ll gt = t[1];
REP (i, 0, n + 1) {
sm += a[i];
res += p[i];
cerr << i << ' ' << sm << ' ' << res << '\n';
while (j > 0 && sm > gt) {
sm -= b[j];
res -= q[j--];
cerr << ' ' << -(j + 1) << ' ' << sm << ' ' << res << '\n';
}
if (sm > gt) continue;
mxto(ans, res);
}
cout << ans << '\n';
return 0;
}
