1

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

struct piao {
	int a, price, time;
};
piao t[100005];
int n, ans = 0;

int main() {
	cin >> n;
	for (int i = 1; i <= n; i++) {
		int a, price, time;
		cin >> a >> price >> time;
		t[i].a = a;
		t[i].price = price;
		t[i].time = time;
		if (a == 0) {
			ans = ans + price;
		}
	}
	for (int i = 1; i <= n; i++) {
		if (t[i].a == 1) {
			int money = t[i].price;
			int x = 0;
			for (int j = i - 1; j >= 1 && (t[i].time - t[j].time ) <= 45; j--) {
				if (t[j].a == 0 && t[j].price >= t[i].price ) {
					money = 0;
					x = j;
				}
			}
			t[x].a = -1;
			ans = ans + money;
		}
	}
	cout << ans;
	return 0;
}