#include<iostream>
#include<vector>
using namespace std;

int n;
long long ans=0;
struct node{
	int price,time;
};

vector<node> v;

int main()
{
	//freopen("CSP2019J2.in","r",stdin);
	//freopen("CSP2.ans","w",stdout);
	cin>>n;
	int a,b,c;
	for(int i=1;i<=n;i++)
	{
		cin>>a>>b>>c;
		if(a==0)
		{
			ans+=b;
			v.push_back({b,c});
		}
		else
		{
			bool flag=1;
			for(int i=0;i<v.size();i++)
			{
				if(v[i].time+45<c)
					v.erase(v.begin()+i);
				else
				{
					if(v[i].price>=b)
					{
						v.erase(v.begin()+i);
						flag=0;
						break;
					}
				}
			}
			if(flag)
				ans+=b;
		}
		//cout<<ans<<endl;
	}
	cout<<ans<<endl;
	return 0;
}