#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
//using mint = modint1000000007;
//const int mod = 1000000007;
//using mint = modint998244353;
//const int mod = 998244353;
//const int INF = 1e9;
//const long long LINF = 1e18;
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define rep2(i,l,r)for(int i=(l);i<(r);++i)
#define rrep(i, n) for (int i = (n-1); i >= 0; --i)
#define rrep2(i,l,r)for(int i=(r-1);i>=(l);--i)
#define all(x) (x).begin(),(x).end()
#define allR(x) (x).rbegin(),(x).rend()
#define endl "\n"
#define P pair<int,int>
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }
long long op(long long a, long long b) { return a + b; }
long long e() { return 0; }
int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int n; cin >> n;
	vector<int>v;
	vector<int>t(n), a(n), b(n);
	rep(i, n) {
		cin >> t[i] >> a[i] >> b[i];
		if (0 == t[i])v.push_back(a[i]);
	}
	sort(all(v));
	v.erase(unique(all(v)), v.end());
	long long ans = 0;
	segtree<long long, op, e>seg(v.size());
	rep(i, n) {
		if (0 == t[i]) {
			int idx = lower_bound(all(v), a[i]) - v.begin();
			auto get = seg.get(idx);
			get += b[i];
			seg.set(idx, get);
		}
		else {
			int idxl = lower_bound(all(v), a[i]) - v.begin();
			int idxr = upper_bound(all(v), b[i]) - v.begin();
			ans += seg.prod(idxl, idxr);
		}
	}
	cout << ans << endl;
	return 0;
}