#include <iostream>
using namespace std;
struct Node{
int t;
int p;
bool f;
}arr[999999];
int cnt;
int n, ans;
int main(){
// freopen("transfer.in", "r", stdin);
// freopen("transfer.out", "w", stdout);
cin >> n;
while(n--){
int trans, price, t;
cin >> trans >> price >> t;
if(trans == 0){ //乘坐地铁
cnt++;
arr[cnt].t = t;
arr[cnt].p = price;
arr[cnt].f = true;
ans += price;
}else if(trans == 1){ //乘坐公交
bool flag = false;
for(int i=1; i<=cnt; i++){
//时间小于45分钟
//没有用过
//价格大小
if(t - arr[i].t <= 45 && arr[i].f == true && price <= arr[i].p){
arr[i].f = false;
flag = true;
break;
}
}
if(flag == false){
ans += price;
}
}
}
cout << ans;
// fclose(stdin);
// fclose(stdout);
return 0;
}