#include<bits/stdc++.h> using namespace std; int main() { long long n,id,m,t,p=0,ans=0; cin>>n; for(int i=1;i<=n;i++){ int t1;```cpp

		cin>>id;
		if(id==0){
			cin>>m>>t;
			t1=t;
			p++;
			ans+=m;
		}else if(id==1){
			cin>>m>>t;
			if((t-t1)<=45){
				p--;
			}else{
				ans+=m;
			}
		}
	}
	cout<<ans;
	return 0;
}