#include<iostream>
#include<string>
#include<cmath>
#include<stdlib.h>
using namespace std;
int t[100000000];
int main()
{
	int n;
	cin >> n;
	int sum = 0;
	memset(t, 0, sizeof(t));
	for (int i = 0; i < n; i++)
	{
		int a, b, c;
		cin >> a >> b >> c;
		if (a == 0)
		{
			sum += b;
			t[c] = b;
		}
		else
		{
			int k = 1;
			int x = c - 45 ;
			for (int i = x; i < c; i++)
			{

				if (t[i] > 0 && t[i] >= b)
				{
					t[i] = 0;
					k = 0;
					break;
				}
			}
			if (k)
			{
				sum += b;
			}
		}
	}
	cout << sum << endl;
	return 0;
}