#line 1 "a.cpp"
#define PROBLEM ""
#line 2 "/home/kuhaku/home/github/algo/lib/template/template.hpp"
#pragma GCC target("sse4.2,avx2,bmi2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
template <class T, class U>
bool chmax(T &a, const U &b) {
    return a < (T)b ? a = (T)b, true : false;
}
template <class T, class U>
bool chmin(T &a, const U &b) {
    return (T)b < a ? a = (T)b, true : false;
}
constexpr std::int64_t INF = 1000000000000000003;
constexpr int Inf = 1000000003;
constexpr int MOD = 1000000007;
constexpr int MOD_N = 998244353;
constexpr double EPS = 1e-7;
constexpr double PI = M_PI;
#line 3 "/home/kuhaku/home/github/algo/lib/segment_tree/monoid.hpp"

template <class T>
struct Add {
    using value_type = T;
    static constexpr T id = T(0);
    static constexpr T op(const T &lhs, const T &rhs) { return lhs + rhs; }

    template <class U>
    static constexpr U f(T lhs, U rhs) {
        return lhs + rhs;
    }
};

template <class T>
struct And {
    using value_type = T;
    static constexpr T id = std::numeric_limits<T>::max();
    static constexpr T op(const T &lhs, const T &rhs) { return lhs & rhs; }

    template <class U>
    static constexpr U f(T lhs, U rhs) {
        return lhs & rhs;
    }
};

template <class T>
struct Or {
    using value_type = T;
    static constexpr T id = T(0);
    static constexpr T op(const T &lhs, const T &rhs) { return lhs | rhs; }

    template <class U>
    static constexpr U f(T lhs, U rhs) {
        return lhs | rhs;
    }
};

template <class T>
struct Xor {
    using value_type = T;
    static constexpr T id = T(0);
    static constexpr T op(const T &lhs, const T &rhs) { return lhs ^ rhs; }

    template <class U>
    static constexpr U f(T lhs, U rhs) {
        return lhs ^ rhs;
    }
};

template <class T>
struct Min {
    using value_type = T;
    static constexpr T id = std::numeric_limits<T>::max();
    static constexpr T op(const T &lhs, const T &rhs) { return std::min(lhs, rhs); }

    template <class U>
    static constexpr U f(T lhs, U rhs) {
        return std::min((U)lhs, rhs);
    }
};

template <class T>
struct Max {
    using value_type = T;
    static constexpr T id = std::numeric_limits<T>::min();
    static constexpr T op(const T &lhs, const T &rhs) { return std::max(lhs, rhs); }

    template <class U>
    static constexpr U f(T lhs, U rhs) {
        return std::max((U)lhs, rhs);
    }
};

template <class T>
struct Update {
    using value_type = T;
    static constexpr T id = std::numeric_limits<T>::max();
    static constexpr T op(const T &lhs, const T &rhs) { return lhs == Update::id ? rhs : lhs; }

    template <class U>
    static constexpr U f(T lhs, U rhs) {
        return lhs == Update::id ? rhs : lhs;
    }
};

template <class T>
struct Affine {
    using value_type = std::pair<T, T>;
    static constexpr std::pair<T, T> id = std::pair<T, T>(1, 0);
    static constexpr std::pair<T, T> op(std::pair<T, T> lhs, std::pair<T, T> rhs) {
        return {lhs.first * rhs.first, lhs.first * rhs.second + lhs.second};
    }
};

template <class M>
struct Rev {
    using T = typename M::value_type;
    using value_type = T;
    static constexpr T id = M::id;
    static constexpr T op(T lhs, T rhs) { return M::op(rhs, lhs); }
};
#line 4 "/home/kuhaku/home/github/algo/lib/segment_tree/dynamic_segment_tree.hpp"

/**
 * @brief 動的セグメント木
 *
 * @tparam M モノイド
 */
template <class M>
struct dynamic_segment_tree {
  private:
    using T = typename M::value_type;

    struct _node {
        using pointer = _node *;
        std::int64_t index;
        pointer left, right;
        T value, product;

        constexpr _node(int _index, T _value)
            : index(_index), left(nullptr), right(nullptr), value(_value), product(_value) {}
    };

  public:
    using node_ptr = typename _node::pointer;

    dynamic_segment_tree(std::int64_t n) : root(), _size(n) {}

    T operator[](int k) const {
        node_ptr node = root;
        std::int64_t l = 0, r = _size;
        while (r - l > 1) {
            if (!node) return M::id;
            if (node->index == k) return node->value;
            std::int64_t m = (l + r) >> 1;
            if (k >= m) l = m, node = node->right;
            else r = m, node = node->left;
        }
        return node && node->index == k ? node->value : M::id;
    }
    T at(int k) const { return operator[](k); }
    T get(int k) const { return operator[](k); }

    void set(std::int64_t k, T x) {
        assert(0 <= k && k < _size);
        if (!root) {
            root = new _node(k, x);
            return;
        }
        node_ptr node = root;
        std::vector<node_ptr> nodes;
        std::int64_t l = 0, r = _size;
        while (true) {
            nodes.emplace_back(node);
            if (k == node->index) {
                node->value = x;
                break;
            }
            std::int64_t m = (l + r) >> 1;
            if (k >= m) {
                if (k < node->index) std::swap(k, node->index), std::swap(x, node->value);
                if (!node->right) node->right = new _node(k, x);
                l = m, node = node->right;
            } else {
                if (node->index < k) std::swap(k, node->index), std::swap(x, node->value);
                if (!node->left) node->left = new _node(k, x);
                r = m, node = node->left;
            }
        }

        std::reverse(std::begin(nodes), std::end(nodes));
        for (auto node : nodes) {
            node->product = M::op(M::op(node->left ? node->left->product : M::id, node->value),
                                  node->right ? node->right->product : M::id);
        }
    }
    void reset(std::int64_t k) { set(k, M::id); }

    T all_prod() const { return root ? root->product : M::id; }
    T prod(std::int64_t a, std::int64_t b) const {
        assert(0 <= a && a <= _size);
        assert(0 <= b && b <= _size);
        return prod(a, b, root, 0, _size);
    }

    template <class F>
    std::int64_t max_right(F f) const {
        assert(f(M::id));
        if (root == nullptr || f(root->value)) return _size;
        node_ptr node = root;
        T sm = M::id;
        std::int64_t l = 0, r = _size;
        while (r - l > 1) {
            std::int64_t m = (l + r) >> 1;
            if (node->left == nullptr || f(M::op(sm, node->left->value))) {
                if (node->left != nullptr) sm = M::op(sm, node->left->value);
                l = m;
                node = node->right;
            } else {
                r = m;
                node = node->left;
            }
        }
        return f(M::op(sm, node->value)) ? r : l;
    }

    template <class F>
    std::int64_t min_left(F f) const {
        assert(f(M::id));
        if (root == nullptr || f(root->value)) return 0;
        node_ptr node = root;
        T sm = M::id;
        std::int64_t l = 0, r = _size;
        while (r - l > 1) {
            std::int64_t m = (l + r) >> 1;
            if (node->right == nullptr || f(M::op(node->right->value, sm))) {
                if (node->right != nullptr) sm = M::op(node->right->value, sm);
                r = m;
                node = node->left;
            } else {
                l = m;
                node = node->right;
            }
        }
        return f(M::op(node->value, sm)) ? l : r;
    }

  private:
    node_ptr root;
    std::int64_t _size;

    T prod(std::int64_t a, std::int64_t b, node_ptr node, std::int64_t l, std::int64_t r) const {
        if (!node || r <= a || b <= l) return M::id;
        if (a <= l && r <= b) return node->product;

        return M::op(M::op(prod(a, b, node->left, l, (l + r) >> 1),
                           a <= node->index && node->index < b ? node->value : M::id),
                     prod(a, b, node->right, (l + r) >> 1, r));
    }
};
#line 3 "/home/kuhaku/home/github/algo/lib/template/macro.hpp"
#define FOR(i, m, n) for (int i = (m); i < int(n); ++i)
#define FORR(i, m, n) for (int i = (m)-1; i >= int(n); --i)
#define FORL(i, m, n) for (int64_t i = (m); i < int64_t(n); ++i)
#define rep(i, n) FOR (i, 0, n)
#define repn(i, n) FOR (i, 1, n + 1)
#define repr(i, n) FORR (i, n, 0)
#define repnr(i, n) FORR (i, n + 1, 1)
#define all(s) (s).begin(), (s).end()
#line 3 "/home/kuhaku/home/github/algo/lib/template/sonic.hpp"
struct Sonic {
    Sonic() {
        std::ios::sync_with_stdio(false);
        std::cin.tie(nullptr);
    }

    constexpr void operator()() const {}
} sonic;
#line 5 "/home/kuhaku/home/github/algo/lib/template/atcoder.hpp"
using namespace std;
using ll = std::int64_t;
using ld = long double;
template <class T, class U>
std::istream &operator>>(std::istream &is, std::pair<T, U> &p) {
    return is >> p.first >> p.second;
}
template <class T>
std::istream &operator>>(std::istream &is, std::vector<T> &v) {
    for (T &i : v) is >> i;
    return is;
}
template <class T, class U>
std::ostream &operator<<(std::ostream &os, const std::pair<T, U> &p) {
    return os << '(' << p.first << ',' << p.second << ')';
}
template <class T>
std::ostream &operator<<(std::ostream &os, const std::vector<T> &v) {
    for (auto it = v.begin(); it != v.end(); ++it) {
        os << (it == v.begin() ? "" : " ") << *it;
    }
    return os;
}
template <class Head, class... Tail>
void co(Head &&head, Tail &&...tail) {
    if constexpr (sizeof...(tail) == 0) std::cout << head << '\n';
    else std::cout << head << ' ', co(std::forward<Tail>(tail)...);
}
template <class Head, class... Tail>
void ce(Head &&head, Tail &&...tail) {
    if constexpr (sizeof...(tail) == 0) std::cerr << head << '\n';
    else std::cerr << head << ' ', ce(std::forward<Tail>(tail)...);
}
template <typename T, typename... Args>
auto make_vector(T x, int arg, Args... args) {
    if constexpr (sizeof...(args) == 0) return std::vector<T>(arg, x);
    else return std::vector(arg, make_vector<T>(x, args...));
}
void setp(int n) {
    std::cout << std::fixed << std::setprecision(n);
}
void Yes(bool is_correct = true) {
    std::cout << (is_correct ? "Yes" : "No") << '\n';
}
void No(bool is_not_correct = true) {
    Yes(!is_not_correct);
}
void YES(bool is_correct = true) {
    std::cout << (is_correct ? "YES" : "NO") << '\n';
}
void NO(bool is_not_correct = true) {
    YES(!is_not_correct);
}
void Takahashi(bool is_correct = true) {
    std::cout << (is_correct ? "Takahashi" : "Aoki") << '\n';
}
void Aoki(bool is_not_correct = true) {
    Takahashi(!is_not_correct);
}
#line 4 "a.cpp"

int main(void) {
    int n;
    cin >> n;
    dynamic_segment_tree<Add<int>> st(Inf);
    ll ans = 0;
    rep (i, n) {
        int a, x, y;
        cin >> a >> x >> y;
        if (a == 0) {
            st.set(x, st[x] + y);
        } else {
            ce(st.prod(x, y + 1));
            ans += st.prod(x, y + 1);
        }
    }
    co(ans);

    return 0;
}