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

#define ll long long 
#define lll __int128
#define INF 0x3f3f3f3f
#define LNF 0x3f3f3f3f3f3f3f3fll
#define MOD 998244353
#define pii pair<int, int>
#define pdd pair<double, double>

#define N 400010
#define K 550

int n, m, r;
ll d[N], k[N], c[N], cp[N][K];
ll dp[N];

int main() {
#ifdef TEST
    freopen("zz.in", "r+", stdin);
#endif
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin >> n >> m >> r;
    for (int i = 0; i < n; ++ i) cin >> d[i] >> k[i] >> c[i];

    vector<int> rc;
    for (int i = 0; i < m; ++ i) {
        int p, q; cin >> p >> q;
        for (int j = 0; j < q; ++ j) {
            rc.emplace_back(p);
        }
    }
    sort(rc.begin(), rc.end());


    int sz = rc.size();
    for (int i = 0; i < sz; ++ i) dp[i] = LNF; 
    for (int i = 0; i < n; ++ i) {
        int nxt = 0;
        for (int j = 0; j < sz; ++ j) {
            nxt = max(nxt, j);
            while (nxt < sz && rc[nxt] <= rc[j] + d[i] - 1 && nxt - j + 1 <= k[i]) ++ nxt;
            cp[i][j] = nxt;
        }
    }

    for (int i = sz-1; i >= 0; -- i) {
        dp[i] = min(dp[i], dp[i+1] + r);
        for (int j = 0; j < n; ++ j) {
            dp[i] = min(dp[i], dp[cp[j][i]] + c[j]);
        }
    }  

    cout << dp[0] << '\n';
}