#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>
#include <array>
#include <vector>
#include <deque>
#include <list>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <stack>
#include <queue>
#include <bitset>
#include <tuple>
#include <cmath>
#include <complex>
#include <algorithm>
#include <utility>
#include <regex>
#include <cstdint>
#include <numeric>
#include <functional>
#include <cassert>

using namespace std;
using ll  = long long;
using ull = unsigned long long;

namespace utils{
#define ALL(x) begin(x), end(x)
#define RALL(x) rbegin(x), rend(x)
    template<class T, class Compare> using p_queue = priority_queue<T, vector<T>, Compare>;
    template<class T> using min_queue = p_queue<T, greater<T>>;
    template<class T> using max_queue = p_queue<T, less<T>>;

    template<class T> inline bool UPMIN(T& X, const T& A){ if(X > A) {X = A; return true;} return false; }
    template<class T> inline bool UPMAX(T& X, const T& A){ if(X < A) {X = A; return true;} return false; }

    template<class T>
    vector<T> VEC(int n, T t){
        return vector<T>(n, t);
    }
    template<class ...Ts>
    auto VEC(int n, Ts ... ts){
        return vector<decltype(VEC(ts...))>(n, VEC(ts...));
    }

    template <class S, class T>
    istream& operator>>(istream& is, tuple<S, T>& t){
        return is >> get<0>(t) >> get<1>(t);
    }

    template <class S, class T, class U>
    istream& operator>>(istream& is, tuple<S, T, U>& t){
        return is >> get<0>(t) >> get<1>(t) >> get<2>(t);
    }

    template <class S, class T>
    ostream& operator<<(ostream& os, const tuple<S, T>& t){
        return os << get<0>(t) << ' ' <<  get<1>(t);
    }

    template <class S, class T, class U>
    ostream& operator<<(ostream& os, const tuple<S, T, U>& t){
        return os << get<0>(t) << ' ' <<  get<1>(t) << ' ' <<  get<2>(t);
    }

    template<class T>
    istream& operator>>(istream& is, vector<T>& v){
        for (auto &&x : v) { is >> x; } return is;
    }

    template<class T>
    ostream& operator<<(ostream& os, const vector<T>& v){
        auto p = v.begin();
        assert(p != v.end());
        os << *p++;
        while(p != v.end()){
            os << ' ' << *p++;
        }
        return os ;
    }

    template<class T>
    ostream& operator<<(ostream& os, const vector<vector<T>>& v){
        auto p = v.begin();
        assert(p != v.end());
        os << *p++;
        while(p != v.end()){
            os << '\n' << *p++;
        }
        return os;
    }

    template<class ...Ts>
    ostream& operator<<(ostream& os, const vector<tuple<Ts...>>& v){
        auto p = v.begin();
        assert(p != v.end());
        os << *p++;
        while(p != v.end()){
            os << '\n' << *p++;
        }
        return os;
    }

    constexpr long long INFLL   = 1'000'000'000'000'000'000ll;
    constexpr int       INF     = 1'000'000'000;
    constexpr double    PI      = 3.14'159'265'358'973;
    constexpr double    EPS     = 1e-10;
}
using namespace utils;

template<class Monoid>
class SegmentTree {
    using Func = std::function<Monoid(Monoid, Monoid)>;
    int N;

    std::vector<Monoid> segment;

    const Func op;
    const Monoid id;

    bool dirty_flag;
public:
    // id : op = max なら -INT_MAX
    SegmentTree(int n, const Func biop, const Monoid& M1)
    : op(biop), id(M1), dirty_flag(false) {
        N = 1;
        while(N < n) N *= 2;
        segment.assign(2 * N, id);
    }

    void set(int k, const Monoid &a){
        dirty_flag = true;
        segment[k + N] = a;
    }

    void build() {
        for (int k = N - 1; k > 0; --k) {
            segment[k] = op(segment[2 * k], segment[2 * k + 1]);
        } // end k
        dirty_flag = false;
    }

    void update(int k, const Monoid& a){
        k += N;
        segment[k] = a;
        while(k /= 2){
            segment[k] = op(segment[k*2], segment[k*2+1]);
        }
    }

    // -> op [a,b)
    Monoid query(unsigned a, unsigned b){
        if(dirty_flag) build();
        dirty_flag = false;
        Monoid L = id, R = id;
        for (a += N, b += N; a < b; a >>= 1u, b >>= 1u) {
            if(a & 1u) L = op(L, segment[a++]);
            if(b & 1u) R = op(segment[--b], R);
        } // end i
        return op(L, R);
    }

    Monoid operator[](const int &k) const{
        return segment[k + N];
    }
};


class solver{
    istream& is;
    ostream& os;

public:
    solver(istream& I, ostream& O) :is(I), os(O) {}
    ll N, Q;
    vector<tuple<ll, ll, ll>> STX;
    vector<ll> D;

    unordered_map<ll, int> zip;
//    unordered_map<int, ll> unzip;

    bool input() {
        N = Q = 0;
        is >> N >> Q;
        STX.resize(N);
        is >> STX;
        D.resize(Q);
        is >> D;
        return !!is;
    }

    void calc_zip(){
        vector<ll> vs;
        for (int i = 0; i < Q; ++i) {
            vs.push_back(-D[i]);
        } // end i
        for (auto &&stx : STX) {
            ll s, t, x;
            tie(s, t, x) = stx;
            vs.push_back(x-s);
            vs.push_back(x-t);
        } // end stx
        sort(ALL(vs));
        auto p = unique(ALL(vs));
        int count = 0;
        for (auto&& st = vs.begin(); st != p; st++){
            zip[*st] = count;
//            unzip[count] = *st;
            count++;
        }
    }

    void run();
};

int main(int argc, char *argv[]) {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    cout << setprecision(16) << scientific;
#ifdef XELMH
    string test_cases = "test_E.txt";
    cerr << test_cases << " -->" << endl;
    auto fs = fstream(test_cases, fstream::in);
    int loop = 0;
    while(fs) {
        loop++;
        cout << '#' << loop << "#------\n";
        solver(fs, cout).run();
    }
    if(loop <= 1) {
        cout << "===" << endl;
        while(cin) solver(cin, cout).run();
    }
#else
    solver(cin, cout).run();
#endif
    return 0;
}


void solver::run(){
    if(!input()) return;
    calc_zip();

    vector<vector<tuple<bool, ll>>> stop(zip.size());
    for (auto &&stx : STX) {
        ll s, t, x;
        tie(s, t, x) = stx;
        stop[zip[x-s]].emplace_back(0, x);
        stop[zip[x-t]].emplace_back(0, -x);
    } // end stx
    vector<ll> ans(Q);
    for (int i = 0; i < Q; ++i) {
        stop[zip[-D[i]]].emplace_back(1, i);
    } // end i

    set<ll> constructing;
    for (int i = stop.size()-1; i >= 0; --i) {
        for (auto &&ttt : stop[i]) {
            bool type; ll val;
            tie(type, val) = ttt;
            if(type == 0){
                if(val < 0) constructing.erase(-val);
                else constructing.insert(val);
            }
            else {
                if(constructing.empty()){
                    ans[val] = -1;
                }
                else {
                    ll x = *constructing.begin();
                    ans[val] = x;
                }
            }
        } // end ttt
    } // end i

    for (int i = 0; i < Q; ++i) {
        os << ans[i] << '\n';
    } // end i

}


Measured memory_bytes: 78212