#define _CRT_SECURE_NO_WARNINGS
#include "bits/stdc++.h"
#include <iostream>
#include <random>
#include <unordered_map>
#include <unordered_set>
#include <immintrin.h>
#ifdef _MSC_VER
#include <ppl.h>
#endif

using namespace std;

//呪文
#define DUMPOUT cerr
#define dump(...) DUMPOUT<<"  ";DUMPOUT<<#__VA_ARGS__<<" :["<<__LINE__<<":"<<__FUNCTION__<<"]"<<endl;DUMPOUT<<"    ";dump_func(__VA_ARGS__)

typedef unsigned uint; typedef long long ll; typedef unsigned long long ull; typedef pair<int, int> pii; typedef pair<ll, ll> pll; typedef pair<double, double> pdd; typedef pair<string, string> pss;
template <typename _KTy, typename _Ty> ostream& operator << (ostream& o, const pair<_KTy, _Ty>& m) { o << "{" << m.first << ", " << m.second << "}"; return o; }
template <typename _KTy, typename _Ty> ostream& operator << (ostream& o, const map<_KTy, _Ty>& m) { if (m.empty()) { o << "{ }"; return o; } o << "{" << *m.begin(); for (auto itr = ++m.begin(); itr != m.end(); itr++) { o << ", " << *itr; } o << "}"; return o; }
template <typename _KTy, typename _Ty> ostream& operator << (ostream& o, const unordered_map<_KTy, _Ty>& m) { if (m.empty()) { o << "{ }"; return o; } o << "{" << *m.begin(); for (auto itr = ++m.begin(); itr != m.end(); itr++) { o << ", " << *itr; } o << "}"; return o; }
template <typename _Ty> ostream& operator << (ostream& o, const vector<_Ty>& v) { if (v.empty()) { o << "{ }"; return o; } o << "{" << v.front(); for (auto itr = ++v.begin(); itr != v.end(); itr++) { o << ", " << *itr; } o << "}"; return o; }
template <typename _Ty> ostream& operator << (ostream& o, const set<_Ty>& s) { if (s.empty()) { o << "{ }"; return o; } o << "{" << *(s.begin()); for (auto itr = ++s.begin(); itr != s.end(); itr++) { o << ", " << *itr; } o << "}"; return o; }
template <typename _Ty> ostream& operator << (ostream& o, const unordered_set<_Ty>& s) { if (s.empty()) { o << "{ }"; return o; } o << "{" << *(s.begin()); for (auto itr = ++s.begin(); itr != s.end(); itr++) { o << ", " << *itr; }	o << "}"; return o; }
template <typename _Ty> ostream& operator << (ostream& o, const stack<_Ty>& s) { if (s.empty()) { o << "{ }"; return o; } stack<_Ty> t(s); o << "{" << t.top(); t.pop(); while (!t.empty()) { o << ", " << t.top(); t.pop(); } o << "}";	return o; }
template <typename _Ty> ostream& operator << (ostream& o, const list<_Ty>& l) { if (l.empty()) { o << "{ }"; return o; } o << "{" << l.front(); for (auto itr = ++l.begin(); itr != l.end(); ++itr) { o << ", " << *itr; } o << "}"; return o; }
template <typename _KTy, typename _Ty> istream& operator >> (istream& is, pair<_KTy, _Ty>& m) { is >> m.first >> m.second; return is; }
template <typename _Ty> istream& operator >> (istream& is, vector<_Ty>& v) { for (size_t i = 0; i < v.size(); i++) is >> v[i]; return is; }
namespace aux { // print tuple
    template<typename Ty, unsigned N, unsigned L> struct tp { static void print(ostream& os, const Ty& v) { os << get<N>(v) << ", "; tp<Ty, N + 1, L>::print(os, v); } };
    template<typename Ty, unsigned N> struct tp<Ty, N, N> { static void print(ostream& os, const Ty& v) { os << get<N>(v); } };
}
template<typename... Tys> ostream& operator<<(ostream& os, const tuple<Tys...>& t) { os << "{"; aux::tp<tuple<Tys...>, 0, sizeof...(Tys) - 1>::print(os, t); os << "}"; return os; }

template<typename A, size_t N, typename T> inline void Fill(A(&array)[N], const T &val) { std::fill((T*)array, (T*)(array + N), val); }

void dump_func() { DUMPOUT << endl; }
template <class Head, class... Tail> void dump_func(Head&& head, Tail&&... tail) { DUMPOUT << head; if (sizeof...(Tail) == 0) { DUMPOUT << " "; } else { DUMPOUT << ", "; } dump_func(std::move(tail)...); }

template<typename Ty>Ty modpow(Ty n, Ty e, Ty m) { Ty result = 1; while (e > 0) { if (e & 1)result = (result*n) % m; e >>= 1; n = (n*n) % m; }return result; }


#define PI 3.14159265358979323846
#define EPS 1e-10
#define FOR(i,a,n) for(int i=(a);i<(n);++i)
#define REP(i,n)  FOR(i,0,n)
#define all(j) (j).begin(), (j).end()
#define SZ(j) ((int)(j).size())
#define fake false



//#define int long long

const int INF = INT_MAX;
struct LazySegmentTree {
private:
    int n;
    vector<int> node, lazy;
    vector<bool> lazyFlag;

public:
    LazySegmentTree(vector<int> v) {
        int sz = (int)v.size();
        n = 1; while (n < sz) n *= 2;
        node.resize(2 * n - 1);
        lazy.resize(2 * n - 1, INF);
        lazyFlag.resize(2 * n - 1, false);

        for (int i = 0; i < sz; i++) node[i + n - 1] = v[i];
        for (int i = n - 2; i >= 0; i--) node[i] = min(node[i * 2 + 1], node[i * 2 + 2]);
    }

    void lazyEvaluate(int k, int l, int r) {
        if (lazyFlag[k]) {
            node[k] = lazy[k];
            if (r - l > 1) {
                lazy[k * 2 + 1] = lazy[k * 2 + 2] = lazy[k];
                lazyFlag[k * 2 + 1] = lazyFlag[k * 2 + 2] = true;
            }
            lazyFlag[k] = false;
        }
    }

    void update(int a, int b, int x, int k = 0, int l = 0, int r = -1) {
        if (r < 0) r = n;
        lazyEvaluate(k, l, r);
        if (b <= l || r <= a) return;
        if (a <= l && r <= b) {
            lazy[k] = x;
            lazyFlag[k] = true;
            lazyEvaluate(k, l, r);
        }
        else {
            update(a, b, x, 2 * k + 1, l, (l + r) / 2);
            update(a, b, x, 2 * k + 2, (l + r) / 2, r);
            node[k] = min(node[2 * k + 1], node[2 * k + 2]);
        }
    }

    int find(int a, int b, int k = 0, int l = 0, int r = -1) {
        if (r < 0) r = n;
        lazyEvaluate(k, l, r);
        if (b <= l || r <= a) return INF;
        if (a <= l && r <= b) return node[k];
        int vl = find(a, b, 2 * k + 1, l, (l + r) / 2);
        int vr = find(a, b, 2 * k + 2, (l + r) / 2, r);
        return min(vl, vr);
    }
};

int N, Q;
vector<int> S, T, X;
vector<int> D;
struct Con {
    int s, t, x;
    Con(int s, int t, int x) : s(s), t(t), x(x) {}
};
ostream& operator<<(ostream& os, const Con& c) {
    os << "{s:" << c.s << ",t:" << c.t << ",x:" << c.x << "}";
    return os;
}
vector<Con> cons;

map<int, vector<pii>> chart;

signed main() {

    std::ios::sync_with_stdio(false);
    std::cin.tie(0);

    cin >> N >> Q;
    S.resize(N); T.resize(N); X.resize(N);
    REP(i, N) {
        cin >> S[i] >> T[i] >> X[i];
        cons.emplace_back(S[i], T[i], X[i]);
    }
    D.resize(Q);
    cin >> D;

    sort(all(cons), [&](const Con& a, const Con& b) {
        if (a.x == b.x) return a.s < b.s;
        return a.x < b.x;
    });


    for (auto& c : cons) {
        int x = c.x;
        int s = c.s;
        int t = c.t;
        auto& ch = chart[x];
        if (!ch.empty() && ch.back().second == s)
            ch.back().second = t;
        else
            ch.emplace_back(s, t);
    }
    
    set<int> timeSet;

    // conv to chart
    for (auto& entry : chart) {
        int x = entry.first;
        for (auto& p : entry.second) {
            p.first -= x;
            p.second -= x;
            timeSet.insert(p.first);
            timeSet.insert(p.second);
        }
    }
    
    map<int, int> timeToIdx;
    map<int, int> idxToTime;
    {
        int cnt = 0;
        for (int t : timeSet) {
            timeToIdx[t] = cnt;
            idxToTime[cnt] = t;
            cnt++;
        }
    }

    int NT = timeToIdx.size();

    LazySegmentTree seg(vector<int>(NT + 10, INF));
    for (auto itr = chart.rbegin(); itr != chart.rend(); itr++) {
        int x = itr->first;
        for (pll p : itr->second) {
            int bi = timeToIdx[p.first];
            int ei = timeToIdx[p.second];
            seg.update(bi, ei, x);
        }
    }
    
    vector<int> vt;
    for (int t : timeSet) vt.push_back(t);
    vt.push_back(INF);
    for (int t : D) {
        int idx = upper_bound(all(vt), t) - 1 - vt.begin();
        int x = seg.find(idx, idx + 1);
        cout << (x == INF ? -1 : x) << endl;
    }

    return 0;
}


Measured memory_bytes: 96852