using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;

namespace ABC128E
{
    class Construction
    {
        public int Time;
        public bool NeedsStop;
        public int Pos;

        public Construction(int t, bool needsStop, int p)
        {
            this.Time = t;
            this.NeedsStop = needsStop;
            this.Pos = p;
        }
    }

    class Program
    {
        static void Solve()
        {
            var n = Input.NextInt();
            var q = Input.NextInt();

            // 予約された工事イベントリスト
            var rconstructions = new List<Construction>();
            foreach (var _ in Enumerable.Range(0, n))
            {
                var s = Input.NextInt();
                var t = Input.NextInt();
                var x = Input.NextInt();

                rconstructions.Add(new Construction(s - x, true, x));
                rconstructions.Add(new Construction(t - x, false, x));
            }
            rconstructions = rconstructions.OrderBy(x => x.Time).ToList();

            var ds = Input.NextInt(q);  // 入力時点でソート済み
            var index = 0;
            // 通行止め中の座標
            var stoppedPositions = new SortedSet<int>();
            foreach (var d in ds)
            {
                while (index < rconstructions.Count())
                {
                    var construction = rconstructions[index];

                    // dに関与するイベント範囲を超えた？
                    if (construction.Time > d) break;

                    // 通行止めの登録・削除
                    if (construction.NeedsStop) stoppedPositions.Add(construction.Pos);
                    else stoppedPositions.Remove(construction.Pos);

                    index++;
                }

                // 通行止めされている箇所があれば、そこまで歩ける
                var min = -1;
                if (stoppedPositions.Any()) min = stoppedPositions.First();
                Console.WriteLine(min);
            }
        }

        #region Competitive Template
        static void Main(string[] args)
        {
            var needsFlushOutput = true;
            if (needsFlushOutput)
            {
                // 細かく出力しないようにする
                var sw = new System.IO.StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };
                Console.SetOut(sw);
            }

            // 仮想的に標準入力をセットする
            // NextLine系を使っていると使えない
            //Input.SetText("");

            Solve();

            Console.Out.Flush();
        }

        static class Input
        {
            static char[] separator = { ' ' };
            public static bool IsEof { get; set; }
            static Queue<string> q { get; set; }

            static Input()
            {
                IsEof = false;
                q = new Queue<string>();
            }

            /// <summary>
            /// 入力予約
            /// </summary>
            /// <param name="items"></param>
            public static void SetText(IEnumerable<string> items)
            {
                foreach (var item in items)
                {
                    SetText(item);
                }
            }

            /// <summary>
            /// 入力予約
            /// </summary>
            /// <param name="s"></param>
            /// <returns></returns>
            public static bool SetText(string s)
            {
                if (s == null) return false;

                foreach (var elem in s.Trim().Split(separator, StringSplitOptions.RemoveEmptyEntries))
                {
                    q.Enqueue(elem);
                }

                return true;
            }

            /// <summary>
            /// 内部queueに入力からの値をsplitして格納する
            /// </summary>
            /// <returns></returns>
            static bool read()
            {
                var s = Console.ReadLine();
                if (s == null) return false;

                foreach (var elem in s.Trim().Split(separator, StringSplitOptions.RemoveEmptyEntries))
                {
                    q.Enqueue(elem);
                }

                if (!q.Any()) return read();

                return true;
            }

            /// <summary>
            /// 次のstringを一つ読み込む
            /// </summary>
            /// <returns></returns>
            public static string Next()
            {
                if (!q.Any())
                {
                    if (!read())
                    {
                        IsEof = true;
                        return "";
                    }
                }

                return q.Dequeue();
            }

            public static int NextInt() => int.Parse(Next());
            public static long NextLong() => long.Parse(Next());
            public static double NextDouble() => double.Parse(Next());

            public static List<string> Next(int n) => Enumerable.Range(0, n).Select(_ => Next()).ToList();
            public static List<int> NextInt(int n) => Next(n).Select(x => int.Parse(x)).ToList();
            public static List<long> NextLong(int n) => Next(n).Select(x => long.Parse(x)).ToList();
            public static List<double> NextDouble(int n) => Next(n).Select(x => double.Parse(x)).ToList();

            public static List<string> NextLine() => Console.ReadLine().Trim().Split(separator, StringSplitOptions.RemoveEmptyEntries).ToList();
            public static List<int> NextIntLine() => NextLine().Select(x => int.Parse(x)).ToList();
            public static List<long> NextLongLine() => NextLine().Select(x => long.Parse(x)).ToList();
            public static List<double> NextDoubleLine() => NextLine().Select(x => double.Parse(x)).ToList();
        }
        #endregion
    }
}


Measured memory_bytes: 56420