#include "bits/stdc++.h"
using namespace std;

/* macro */
#define rep(i,a,b) for(int i=a;i<b;i++)
#define revrep(i,a,b) for(int i = a; i > b; i--)
//#define int long long
#define exist(s,e) ((s).find(e)!=(s).end())
#define all(v) (v).begin(), (v).end()
#define each(s,itr) for(auto (itr) = s.begin(); (itr) != s.end(); (itr)++)
//#define sum(v) accumulate(all(v), (0LL))
#define isin(a, b, c) (b <= a && a <= c)
#define println cout << "\n";
#define sz(v) (int)v.size()
#define bin(x) static_cast<bitset<16> >(x)


/* alias */
template<class T> using vec = vector<T>;
typedef vector<int> vi;
typedef pair<int, int> pi;
typedef tuple<int, int, int> ti;
typedef map<int, int> mi;
typedef set<int> si;


/* constant */
const int inf = 1LL << 62;
const int mod = 1e9 + 7;
const int dx[8]={1,0,-1,0,-1,1,-1,1};
const int dy[8]={0,1,0,-1,-1,-1,1,1};
const string alphabet = "abcdefghijklmnopqrstuvwxyz";

/* io_method */
int input(){int tmp;cin >> tmp;return tmp;}
string raw_input(){string tmp;cin >> tmp;return tmp;}
template<class T> void printx(T n){cout << n;}
template<class T, class U> void printx(pair<T, U> p){cout << "(" << p.first << "," << p.second << ")";}
template<class T, class U, class V> void printx(tuple<T, U, V> t){cout << "{" << get<0>(t) << "," << get<1>(t) <<"," << get<2>(t) << "}" << endl;}
template<class T> void printx(vector<T> v){cout << "{";rep(i,0,v.size()){printx(v[i]);if(i != v.size()-1)printx(",");}cout << "}";}
template<class T> void print(T n){printx(n);cout << endl;}
template<class T> void print(set<T> s){cout << "{";each(s, e){if(e != s.begin()) printx(",");printx(*e);}cout << "}" << endl;}
template<class T, class U> void print(map<T, U> mp){cout << "{";each(mp, e){cout << "(" << e -> first << "," << e -> second << ")";}cout << "}" << endl;}
template<class T> void printans(vec<T> v){rep(i,0,sz(v)){cout << v[i] << (i == sz(v) - 1 ? "" : " ");}cout << endl;}


/* general_method */
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
template<class T>T cut(T &a, int l, int r){return T(a.begin()+l, a.begin()+r);}


/* math_method */
int ceil(int a, int b){return a / b + (a % b > 0);}


/* main */

int q;
vec<vi> query;
vi tmp;
mi mp;
void in(){
    cin >> q;
    rep(i,0,q){
        int a, b, c;
        cin >> a >> b >> c;
        query.push_back({a, b, c});
        tmp.push_back(b);
        if(a == 1) tmp.push_back(c);
    }
    sort(all(tmp));
    tmp.erase(unique(all(tmp)), tmp.end());
    rep(i,0,sz(tmp)){
        mp[tmp[i]] = i;
    }
}
struct BIT{
    vector<int> bit;
    int M;

     BIT(int M):
        bit(vector<int>(M+1, 0)), M(M) {}

     int sum(int i) {
        if (!i) return 0;
        return bit[i] + sum(i-(i&-i));
    }

     int s(int f, int t){
        return sum(t) - (f == 0 ? 0 : sum(f - 1));
    }

     void add(int i, int x) {
        if (i > M) return;
        bit[i] += x;
        add(i+(i&-i), x);
    }
};

void solve(){

    int ans = 0;

    BIT b(sz(mp) + 10);

    rep(i,0,q){

        if(query[i][0] == 0){

            b.add(mp[query[i][1]], query[i][2]);

        }else{
            
            ans += b.s(mp[query[i][1]], mp[query[i][2]]);

        }

    }

    print(ans);

}

signed main(){

    cin.tie(0);
    ios::sync_with_stdio(false);
    in();
    solve();
    
}