#include <bits/stdc++.h>
using namespace std;

const int lengh_max = 1502;

long long int enemy[lengh_max][lengh_max];
long long int imos[lengh_max][lengh_max];

int main() {

    int n,k;

    cin >> n >> k;

    for(int i=0; i<n; i++){
        int x,y,hp;
        cin >> x >> y >> hp;
        enemy[x+500][y+500] = hp;
    }

    for(int i=0; i<k; i++){
        int ax,ay,w,h,d;
        cin >> ax >> ay >> w >> h >> d;
        imos[ax+500][ay+500] += d;
        imos[ax+500+w+1][ay+500] += -d;
        imos[ax+500][ay+500+h+1] += -d;
        imos[ax+500+w+1][ay+500+h+1] += d;
    }

    for(int i=0; i<lengh_max; i++){
        for(int j=1; j<lengh_max; j++){
            imos[i][j] += imos[i][j-1];
        }
    }

    for(int j=0; j<lengh_max; j++){
        for(int i=1; i<lengh_max; i++){
            imos[i][j] += imos[i-1][j];
        }
    }

    long long int ans = 0;

    for(int i=0; i<lengh_max; i++){
        for(int j=0; j<lengh_max; j++){
            if(enemy[i][j] != 0 && enemy[i][j] > imos[i][j]){
                ans += enemy[i][j] - imos[i][j];
            }
        }
    }

    cout << ans << endl;

    return 0;
}