#include<iostream>
using namespace std;
struct Sub {
	long long mon,time;
};
Sub plan[100005];
long long n,ans,kind,mon,_time,head=1,tail=1;
int main() {
	ios::sync_with_stdio(false);
	cin>>n;
	for(int i=1;i<=n;i++) {
		cin>>kind>>mon>>_time;
		while(_time-plan[head].time>45) {
			head++;
		}
		if(kind==0) {
			ans+=mon;
			plan[tail].mon=mon;
			plan[tail++].time=_time;
		}
		else {
			bool free=false;
			for(int i=head;i<tail;i++) {
				if(plan[i].mon>=mon) {
					head++;
					free=true;
					break;
				}
			} 
			if(!free) {
				ans+=mon;
			}
		}
	}
	cout<<ans<<'\n';
	return 0;
}

能过样例