#include <iostream>
using namespace std;

const int MAXM = 10;

struct times
{
    int usage;
    int recovery;
    int total;
    int start;
};

times jim[MAXM];
times others[MAXM];

int main()
{
    int n = 10;
    for(int i=0; i<n; i++) {
        cin >> jim[i].usage >> jim[i].recovery;
        jim[i].total = jim[i].usage + jim[i].recovery;
    }
    for(int i=0; i<n; i++) {
        cin >> others[i].usage >> others[i].recovery >> others[i].start;
        others[i].total = others[i].usage + others[i].recovery;
    }
    int t=0;
    for(int reps = 1; reps <= 3; reps++) {
        for(int m=0; m<n; m++) {
//cout << "t, m, others[m].start, others[m].usage, others[m].total = " << t << "," << m << "," << others[m].start
//     <<"," << others[m].usage << "," << others[m].total << ":" << (t-others[m].start)%others[m].total << endl;
            if (t >= others[m].start && (t-others[m].start)%others[m].total <= others[m].usage)
                t += others[m].usage - (t-others[m].start)%others[m].total;
            if (t >= others[m].start)
                others[m].start = t - (t-others[m].start)%(others[m].total);          // update most recent start time for person m
//cout << "start machine " << m << " at " << t << ", updated start time for person " << m << " = " << others[m].start << endl;
            if (others[m].start + others[m].total < t+ jim[m].usage) {
                others[m].start = t+jim[m].usage;
//cout << "person " << m << " start time changed to " << others[m].start << endl;
            }
            else if (t < others[m].start && t+jim[m].usage > others[m].start) {
                others[m].start = t+jim[m].usage;
//cout << "person " << m << " start time changed to " << others[m].start << endl;
            }
            t += jim[m].total;
        }
    }
    cout << t-jim[n-1].recovery << endl;
}