#include<iostream>
#include<vector>
#include<algorithm>

using namespace std;
using ll = long long;

#include<atcoder/fenwicktree>

int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    int n;
    cin>>n;
    vector<ll> t(n),a(n),b(n);
    vector<ll> dx;
    for(int i = 0;i<n;i++){
        cin>>t[i]>>a[i]>>b[i];
        dx.push_back(a[i]);
        dx.push_back(b[i]+1);
    }
    sort(dx.begin(),dx.end());
    dx.erase(unique(dx.begin(),dx.end()),dx.end());
    int m = dx.size();
    ll ans = 0;
    atcoder::fenwick_tree<ll> bit(m);
    for(int i = 0;i<n;i++){
        if(t[i]==0){
            int ni = lower_bound(dx.begin(),dx.end(),a[i]) - dx.begin();
            bit.add(ni,b[i]);
        }else{
            int ni = lower_bound(dx.begin(),dx.end(),a[i]) - dx.begin();
            int nj = upper_bound(dx.begin(),dx.end(),b[i]) - dx.begin();
            ans += bit.sum(ni,nj);
        }
    }
    cout<<ans<<endl;
}