/* #region Head */

// #include <bits/stdc++.h>
#include <algorithm>
#include <array>
#include <bitset>
#include <cassert> // assert.h
#include <cmath>   // math.h
#include <cstring>
#include <ctime>
#include <deque>
#include <fstream>
#include <functional>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <memory>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
using namespace std;

using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pll = pair<ll, ll>;
template <class T> using vc = vector<T>;
template <class T> using vvc = vc<vc<T>>;
using vll = vc<ll>;
using vvll = vvc<ll>;
using vld = vc<ld>;
using vvld = vvc<ld>;
using vs = vc<string>;
using vvs = vvc<string>;
template <class T, class U> using um = unordered_map<T, U>;
template <class T> using pq = priority_queue<T>;
template <class T> using pqa = priority_queue<T, vc<T>, greater<T>>;
template <class T> using us = unordered_set<T>;

#define TREP(T, i, m, n) for (T i = (m), i##_len = (T)(n); i < i##_len; ++(i))
#define TREPM(T, i, m, n) for (T i = (m), i##_max = (T)(n); i <= i##_max; ++(i))
#define TREPR(T, i, m, n) for (T i = (m), i##_min = (T)(n); i >= i##_min; --(i))
#define TREPD(T, i, m, n, d) for (T i = (m), i##_len = (T)(n); i < i##_len; i += (d))
#define TREPMD(T, i, m, n, d) for (T i = (m), i##_max = (T)(n); i <= i##_max; i += (d))

#define REP(i, m, n) for (ll i = (m), i##_len = (ll)(n); i < i##_len; ++(i))
#define REPM(i, m, n) for (ll i = (m), i##_max = (ll)(n); i <= i##_max; ++(i))
#define REPR(i, m, n) for (ll i = (m), i##_min = (ll)(n); i >= i##_min; --(i))
#define REPD(i, m, n, d) for (ll i = (m), i##_len = (ll)(n); i < i##_len; i += (d))
#define REPMD(i, m, n, d) for (ll i = (m), i##_max = (ll)(n); i <= i##_max; i += (d))
#define REPI(itr, ds) for (auto itr = ds.begin(); itr != ds.end(); itr++)
#define REPIR(itr, ds) for (auto itr = ds.rbegin(); itr != ds.rend(); itr++)
#define ALL(x) begin(x), end(x)
#define SIZE(x) ((ll)(x).size())
#define ISIZE(x) ((int)(x).size())
#define PERM(c)                                                                                                        \
    sort(ALL(c));                                                                                                      \
    for (bool c##p = 1; c##p; c##p = next_permutation(ALL(c)))
#define UNIQ(v) v.erase(unique(ALL(v)), v.end());
#define CEIL(a, b) (((a) + (b)-1) / (b))

#define endl '\n'

constexpr ll INF = 1'010'000'000'000'000'017LL;
constexpr int IINF = 1'000'000'007LL;
constexpr ll MOD = 1'000'000'007LL; // 1e9 + 7
// constexpr ll MOD = 998244353;
constexpr ld EPS = 1e-12;
constexpr ld PI = 3.14159265358979323846;

template <typename T> istream &operator>>(istream &is, vc<T> &vec) { // vector 入力
    for (T &x : vec) is >> x;
    return is;
}
template <typename T> ostream &operator<<(ostream &os, const vc<T> &vec) { // vector 出力 (for dump)
    os << "{";
    REP(i, 0, SIZE(vec)) os << vec[i] << (i == i_len - 1 ? "" : ", ");
    os << "}";
    return os;
}
template <typename T> ostream &operator>>(ostream &os, const vc<T> &vec) { // vector 出力 (inline)
    REP(i, 0, SIZE(vec)) os << vec[i] << (i == i_len - 1 ? "\n" : " ");
    return os;
}

template <typename T, size_t _Nm> istream &operator>>(istream &is, array<T, _Nm> &arr) { // array 入力
    REP(i, 0, SIZE(arr)) is >> arr[i];
    return is;
}
template <typename T, size_t _Nm> ostream &operator<<(ostream &os, const array<T, _Nm> &arr) { // array 出力 (for dump)
    os << "{";
    REP(i, 0, SIZE(arr)) os << arr[i] << (i == i_len - 1 ? "" : ", ");
    os << "}";
    return os;
}

template <typename T, typename U> istream &operator>>(istream &is, pair<T, U> &pair_var) { // pair 入力
    is >> pair_var.first >> pair_var.second;
    return is;
}
template <typename T, typename U> ostream &operator<<(ostream &os, const pair<T, U> &pair_var) { // pair 出力
    os << "(" << pair_var.first << ", " << pair_var.second << ")";
    return os;
}

// map, um, set, us 出力
template <class T> ostream &out_iter(ostream &os, const T &map_var) {
    os << "{";
    REPI(itr, map_var) {
        os << *itr;
        auto itrcp = itr;
        if (++itrcp != map_var.end()) os << ", ";
    }
    return os << "}";
}
template <typename T, typename U> ostream &operator<<(ostream &os, const map<T, U> &map_var) {
    return out_iter(os, map_var);
}
template <typename T, typename U> ostream &operator<<(ostream &os, const um<T, U> &map_var) {
    os << "{";
    REPI(itr, map_var) {
        auto [key, value] = *itr;
        os << "(" << key << ", " << value << ")";
        auto itrcp = itr;
        if (++itrcp != map_var.end()) os << ", ";
    }
    os << "}";
    return os;
}
template <typename T> ostream &operator<<(ostream &os, const set<T> &set_var) { return out_iter(os, set_var); }
template <typename T> ostream &operator<<(ostream &os, const us<T> &set_var) { return out_iter(os, set_var); }
template <typename T> ostream &operator<<(ostream &os, const pq<T> &pq_var) {
    pq<T> pq_cp(pq_var);
    os << "{";
    if (!pq_cp.empty()) {
        os << pq_cp.top(), pq_cp.pop();
        while (!pq_cp.empty()) os << ", " << pq_cp.top(), pq_cp.pop();
    }
    return os << "}";
}

// tuple 出力
template <size_t N = 0, bool end_line = false, typename... Args> ostream &operator<<(ostream &os, tuple<Args...> &a) {
    if constexpr (N < std::tuple_size_v<tuple<Args...>>) {
        os << get<N>(a);
        if constexpr (N + 1 < std::tuple_size_v<tuple<Args...>>) {
            os << ' ';
        } else if constexpr (end_line) {
            os << '\n';
        }
        return operator<<<N + 1, end_line>(os, a);
    }
    return os;
}
template <typename... Args> void print_tuple(tuple<Args...> &a) { operator<<<0, true>(cout, a); }

void pprint() { cout << endl; }
template <class Head, class... Tail> void pprint(Head &&head, Tail &&...tail) {
    cout << head;
    if (sizeof...(Tail) > 0) cout << ' ';
    pprint(move(tail)...);
}

// dump
#define DUMPOUT cerr
void dump_func() { DUMPOUT << endl; }
template <class Head, class... Tail> void dump_func(Head &&head, Tail &&...tail) {
    DUMPOUT << head;
    if (sizeof...(Tail) > 0) DUMPOUT << ", ";
    dump_func(move(tail)...);
}

// chmax (更新「される」かもしれない値が前)
template <typename T, typename U, typename Comp = less<>> bool chmax(T &xmax, const U &x, Comp comp = {}) {
    if (comp(xmax, x)) {
        xmax = x;
        return true;
    }
    return false;
}

// chmin (更新「される」かもしれない値が前)
template <typename T, typename U, typename Comp = less<>> bool chmin(T &xmin, const U &x, Comp comp = {}) {
    if (comp(x, xmin)) {
        xmin = x;
        return true;
    }
    return false;
}

// ローカル用
#ifndef ONLINE_JUDGE
#define DEBUG_
#endif

#ifndef MYLOCAL
#undef DEBUG_
#endif

#ifdef DEBUG_
#define DEB
#define dump(...)                                                                                                      \
    DUMPOUT << "  " << string(#__VA_ARGS__) << ": "                                                                    \
            << "[" << to_string(__LINE__) << ":" << __FUNCTION__ << "]" << endl                                        \
            << "    ",                                                                                                 \
        dump_func(__VA_ARGS__)
#else
#define DEB if (false)
#define dump(...)
#endif

#define VAR(type, ...)                                                                                                 \
    type __VA_ARGS__;                                                                                                  \
    assert((cin >> __VA_ARGS__));

template <typename T> istream &operator,(istream &is, T &rhs) { return is >> rhs; }
template <typename T> ostream &operator,(ostream &os, const T &rhs) { return os << ' ' << rhs; }

struct AtCoderInitialize {
    static constexpr int IOS_PREC = 15;
    static constexpr bool AUTOFLUSH = false;
    AtCoderInitialize() {
        ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
        cout << fixed << setprecision(IOS_PREC);
        if (AUTOFLUSH) cout << unitbuf;
    }
} ATCODER_INITIALIZE;

void Yn(bool p) { cout << (p ? "Yes" : "No") << endl; }
void YN(bool p) { cout << (p ? "YES" : "NO") << endl; }

template <typename T> constexpr void operator--(vc<T> &v, int) noexcept {
    for (int i = 0; i < ISIZE(v); ++i) v[i]--;
}
template <typename T> constexpr void operator++(vc<T> &v, int) noexcept {
    for (int i = 0; i < ISIZE(v); ++i) v[i]++;
}

/* #endregion */

// #include <atcoder/all>
// using namespace atcoder;

/* #region BIT */

template <class T = ll> struct BinaryIndexedTree {
    vector<T> data;

    BinaryIndexedTree(int sz) { data.assign(++sz, 0); }

    void init() { fill(ALL(data), T(0)); }

    T sum(int k) const {
        T ret = 0;
        for (++k; k > 0; k -= k & -k) ret += data[k];
        return (ret);
    }

    void add(int k, const T &x) {
        for (++k; k < SIZE(data); k += k & -k) data[k] += x;
    }

    // query for [l, r)
    // subtraction is required
    T query(const int l, const int r) const { return sum(r - 1) - sum(l - 1); }
};

/* #endregion */

/* #region RangeAddBIT */

template <class T = ll> struct RangeAddBinaryIndexedTree {
    BinaryIndexedTree<T> p, q;
    RangeAddBinaryIndexedTree(const int n) : p(n + 1), q(n + 1) {}
    void init() {
        p.init();
        q.init();
    }
    void add_range(const int l, const int r, const T w) {
        p.add(l, -w * l);
        p.add(r, w * r);
        q.add(l, w);
        q.add(r, -w);
    }
    // [0, r) の和を求める
    T get_range(const int r) const { return p.sum(r) + q.sum(r) * r; }
    // [l, r) の和を求める
    T query(const int l, const int r) {
        if (l >= r) return T(0);
        return get_range(r) - get_range(l);
    }
};

/* #endregion */

/* #region parallel_binary_search */

// 並列二分探索
vc<int> parallel_binary_search(int n, int q,
                               function<void(void)> init,       //
                               function<void(int)> operate,     //
                               function<bool(int)> discriminate //
) {
    using pii = pair<int, int>; // mid, qi

    vc<int> ql(q, -1), qr(q, n); // 区間左端(ng)，右端(ok)
    vc<pii> query(q), nxt(0);
    REP(i, 0, q) query[i] = {(ql[i] + qr[i]) / 2, i};
    vc<int> ret(q);

    // 一度も操作をしない状態で満たされるかどうか確かめる必要があるとき使う
    constexpr int QUERY_INIT_CHECK = -2;

    while (!query.empty()) {
        sort(ALL(query));

        int cur = 0;
        init(); // 操作を開始するための初期化

        // 一度も操作をしない状態で満たされるかどうか確かめる
        while (cur < SIZE(query) && query[cur].first == QUERY_INIT_CHECK) {
            pii &p = query[cur++];
            int qi = p.second;

            // 一度も操作をしない状態で充足されたら -1 にする
            ret[qi] = (discriminate(qi)) ? -1 : 0;
        }

        REP(i, 0, n) {
            operate(i); // i 回目の操作

            while (cur < SIZE(query) && query[cur].first <= i) {
                pii &p = query[cur++];
                int qi = p.second, mid = p.first; // mid 回目の操作が今ちょうど終わったところ

                if (discriminate(qi))
                    qr[qi] = mid;
                else
                    ql[qi] = mid;

                if (ql[qi] == -1 && qr[qi] == 0) {
                    nxt.push_back({QUERY_INIT_CHECK, qi});
                } else if (ql[qi] + 1 == qr[qi]) {
                    ret[qi] = qr[qi];
                } else {
                    nxt.push_back({(ql[qi] + qr[qi]) / 2, qi});
                }
            }
        }

        query.swap(nxt);
        nxt.clear();
    }

    return ret;
}

/* #endregion */

// Problem
void solve() {
    VAR(ll, n, k, q);
    vll l(k), r(k), c(k), H(k);
    REP(i, 0, k) cin >> l[i], r[i], c[i], H[i];
    l--;

    vll I(q), X(q);
    REP(i, 0, q) cin >> I[i], X[i];
    I--;

    RangeAddBinaryIndexedTree<> bit(n);

    auto init = [&]() -> void { bit.init(); };
    // oi 回目の操作を適用する
    auto operate = [&](int oi) -> void {
        bit.add_range(l[oi], r[oi], H[oi]); //
    };
    // クエリ qi の判定条件が充足されるかどうかを返す
    auto discriminate = [&](int qi) -> bool {
        return bit.query(I[qi], I[qi] + 1) >= X[qi]; //
    };

    vc<int> ret = parallel_binary_search(k, q, init, operate, discriminate);
    dump(ret);

    REP(i, 0, q) {
        if (ret[i] == k)
            pprint(-1);
        else
            pprint(c[ret[i]]);
    }
}

// entry point
int main() {
    solve();
    return 0;
}