#include <iostream>
#include <vector>
#include <map>
using namespace std;
using ll = long long int;

class BIT{
private:
    vector<ll> a;
    int n;
public:
    BIT(int len){
        a = vector<ll>(len+1, 0);
        n = len;
    }

    void add(int ind, ll x){
        ind++;
        while(ind <= n){
            a[ind] += x;
            ind += ind & (-ind);
        }
    }

    ll sum_sub(int end){
        end++;
        ll ans = 0;
        while(end > 0){
            ans += a[end];
            end -= end & (-end);
        }
        return ans;
    }

    ll sum(int start, int end){
        return sum_sub(end)-sum_sub(start-1);
    }
};

int main(){
    int n;
    cin >> n;
    vector<int> q(n), x(n), y(n);
    for(int i = 0; i < n; i++) cin >> q[i] >> x[i] >> y[i];
    map<int, int> ind;
    for(int i = 0; i < n; i++){
        ind[x[i]];
        if(q[i] == 1) ind[y[i]];
    }

    {
        int i = 0;
        for(auto &p: ind){
            p.second = i;
            i++;
        }
    }

    BIT data(ind.size()+1);
    ll ans = 0;
    for(int i = 0; i < n; i++){
        if(q[i] == 0){
            data.add(ind[x[i]], y[i]);
        }else{
            ans += data.sum(ind[x[i]], ind[y[i]]);
            //cerr << ans << " " << data.sum(ind[x[i]], ind[y[i]]) << endl;
        }
    }
    cout << ans << endl;
    return 0;
}