#include <bits/stdc++.h>
using namespace std;
struct ride {
	int bus_or_subway;
	int price;
	int All_time;
	int time;
}; 
struct li_r {
	int price;
	int time;
};
ride a[100002];
li_r b[100002];
int cnt = 0 , ans = 0;
int main() {
	int n; 
	cin >> n >> a[1].bus_or_subway >> a[1].price >> a[1].All_time;
	if ( a[1].bus_or_subway == 0 ) {
		b[ ++ cnt ].price = a[1].price;
		b[ cnt ].time = a[1].All_time;
	}
	ans += a[1].price;
	for ( int i = 2; i <= n; i ++ ) {
		cin >> a[i].bus_or_subway >> a[i].price >> a[i].All_time;
		a[ i - 1 ].time = a[i].All_time - a[ i - 1 ].All_time;
	}
	for ( int i = 2; i <= n; i ++ ) {
		if ( a[i].bus_or_subway == 0 ) {
			b[ ++ cnt ].price = a[i].price;
			b[ cnt ].time = a[i].All_time;
			ans += a[i].price;
		}
		else {
			bool flag = false;
			for ( int j = 1; j <= cnt; j ++ ) {
				if ( ( a[i].All_time - b[j].time <= 45 ) && ( a[i].price <= b[j].price ) && b[j].price != 0 ) {
					b[j].price = 0;
					b[j].time = 0;
					flag = true;
					break;
				} 
			}
			if ( flag ) {
				continue;
			}
			ans += a[i].price;
		}
//		cout << ans << "\n";
	}
	cout << ans;
	return 0;
}