#include <iostream>
#include <deque>

class railway{public:int price,t;};

int main(){
    
    std::ios::sync_with_stdio(0);
    std::cin.tie(0),std::cout.tie(0);
    
    bool flag;
    int n,w,price,t,ans = 0;
    std::deque <railway> Q;
    
    std::cin >> n;
    while (n--){
        
        flag = 0;
        std::cin >> w >> price >> t;
        while (!Q.empty() && t - 45 > Q.front().t) Q.pop_front();
        if (w == 0) Q.push_back((railway){price,t}),ans += price;
        else{
            
            for (auto it = Q.begin();it != Q.end();it++)
                if ((*it).price >= price){
                    
                    flag = 1;
                    break;
                    
                }
            if (!flag) ans += price;
            
        }
        
    }
    std::cout << ans << '\n';
    
    return 0;
}