#include <bits/stdc++.h>
using namespace std;
long long segTree[1000000] = {};
int segSize;

void init(int n){

  segSize = 1;
  while(segSize < n) segSize *= 2;

  return;
}

void update(int i, long long val){
  i = segSize-1+i;
  segTree[i] += val;

  while(i > 0){
    i = (i - 1) / 2;
    segTree[i] = segTree[i*2+1] + segTree[i*2+2];
  }

  return;
}

long long getsum(int a, int b, int k = 0, int l = 0, int r = segSize){

  if(r <= a || b <= l) return 0;
  if(a <= l && r <= b) return segTree[k];

  long long vl = getsum(a,b,2*k+1,l,(l+r)/2);
  long long vr = getsum(a,b,2*k+2,(l+r)/2,r);
  return vl + vr;
}

int q[100010], x[100010], y[100010];
int main(){
    int n;
    cin >> n;

    set<int> st;
    for(int i = 0;i < n;i++){
        cin >> q[i] >> x[i] >> y[i];
        st.insert(x[i]);
        if(q[i] == 1){
            st.insert(y[i]);
        }
    }

    vector<int> vec;
    for(auto itr = st.begin();itr != st.end();itr++){
        vec.push_back(*itr);
    }

    init(vec.size());

    long long ans = 0;
    for(int i = 0;i < n;i++){
        if(q[i] == 0){
            int idx = lower_bound(vec.begin(), vec.end(), x[i]) - vec.begin();
            update(idx, y[i]);
        }else{
            int idx1 = lower_bound(vec.begin(), vec.end(), x[i]) - vec.begin();
            int idx2 = lower_bound(vec.begin(), vec.end(), y[i]) - vec.begin();
            ans += getsum(idx1, idx2+1);
        }
    }

    cout << ans << endl;

    return 0;
}