#include <bits/stdc++.h>
using namespace std;
int main(){
  int N, K;
  cin >> N >> K;
  vector<int> X(N), Y(N), HP(N);
  for (int i = 0; i < N; i++){
    cin >> X[i] >> Y[i] >> HP[i];
    X[i] += 500;
    Y[i] += 500;
  }
  vector<vector<int>> imos(1002, vector<int>(1002, 0));
  for (int i = 0; i < K; i++){
    int AX, AY, W, H, D;
    cin >> AX >> AY >> W >> H >> D;
    AX += 500;
    AY += 500;
    int BX = min(AX + W + 1, 1001);
    int BY = min(AY + H + 1, 1001);
    imos[AX][AY] += D;
    imos[AX][BY] -= D;
    imos[BX][AY] -= D;
    imos[BX][BY] += D;
  }
  for (int i = 0; i <= 1001; i++){
    for (int j = 0; j <= 1000; j++){
      imos[i][j + 1] += imos[i][j];
    }
  }
  for (int i = 0; i <= 1001; i++){
    for (int j = 0; j <= 1000; j++){
       imos[j + 1][i] += imos[j][i];
    }
  }
  int ans = 0;
  for (int i = 0; i < N; i++){
    if (imos[X[i]][Y[i]] < HP[i]){
      ans += HP[i] - imos[X[i]][Y[i]];
    }
  }
  cout << ans << endl;
}