import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.util.AbstractMap;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Deque;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.PriorityQueue;
import java.util.Queue;
import java.util.Set;
import java.util.TreeMap;
import java.util.TreeSet;

import static java.util.Comparator.*;				

public class Main {
	
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        MyInput in = new MyInput(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        
        Solver solver = new Solver();
        solver.solve(1, in, out);
        
        out.close();
    }
    
    // ======================================================================

    static class PPP {
    	public int key, val;
    	public PPP(int key, int val) {
    		this.key = key;
    		this.val = val;
    	}
		public int getKey() {
			return key;
		}
		public void setKey(int key) {
			this.key = key;
		}
		public int getVal() {
			return val;
		}
		public void setVal(int val) {
			this.val = val;
		}
    }
	static class Solver {
		// セグメント木
        class Seg1 {
            final int n;
            final int[] seg;
 
            public Seg1(final int n) {
            	// intの最も左側の1のビット以外を0にする
                this.n = Integer.highestOneBit(n) << 1;
                seg = new int[this.n << 1];
                Arrays.fill(seg, Integer.MAX_VALUE);
            }
 
            void update(int l, int r, int v) {
                update(l, r, v, 0, 0, n);
            }
 
            void update(int l, int r, int v, int k, int curL, int curR) {
                if (curR <= l || curL >= r) {
                    return;
                }
                if (l <= curL && curR <= r) {
                    seg[k] = Math.min(seg[k], v);
                    return;
                }
                final int curM = (curL + curR) / 2;
                update(l, r, v, 2 * k + 1, curL, curM);
                update(l, r, v, 2 * k + 2, curM, curR);
            }
 
            int get(int i) {
                i += n - 1;
                int ret = seg[i];
                while (i != 0) {
                    i = (i - 1) / 2;
                    ret = Math.min(ret, seg[i]);
                }
                return ret;
            }
        }
        
		public void solve(int testNumber, MyInput in, PrintWriter out) {
			int N = in.nextInt();
			int Q = in.nextInt();
            TreeSet<Integer> set = new TreeSet<>();
            int[][] stop = new int[N][];						// 工事場所
			int s, t, x;
			for(int i=0; i < N; i++) {
    			s = in.nextInt();
    			t = in.nextInt();
    			x = in.nextInt();
    											
                stop[i] = new int[]{s - x, t - x, x};			// ２次元配列への代入
                set.add(stop[i][0]);							// 時間をセット
                set.add(stop[i][1]);							// 時間をセット
    		}
			int[] D = new int[Q];
			for(int i=0; i < Q; i++) {
				D[i] = in.nextInt();
				set.add(D[i]);									// 時間をセット			
			}
            int[] cmp = new int[set.size()];					// 時間を圧縮する
            for (int i = 0; i < cmp.length; i++) {
                cmp[i] = set.pollFirst();
            }
            Seg1 seg = new Seg1(cmp.length);					// セグメント木を作る
            for (int i = 0; i < stop.length; i++) {				// 工事場所分、繰り返す
                int l = Arrays.binarySearch(cmp, stop[i][0]);	//   開始時間を検索（必ずある）
                int r = Arrays.binarySearch(cmp, stop[i][1]);	//   終了時間を検索（必ずある）
                seg.update(l, r, stop[i][2]);					//   停止位置を設定する
            }
            int idx, ans;
            for (int q : D) {
                idx = Arrays.binarySearch(cmp, q);				// 時間を圧縮しているので、位置を検索する
                ans = seg.get(idx);								// セグメント木から停止位置を取得する
                if (ans == Integer.MAX_VALUE) ans = -1;			// なければ -1
                out.println(ans);
            }
        }
    }

    // ======================================================================
    static class Pair<K, V> extends AbstractMap.SimpleEntry<K, V> {
        /** serialVersionUID. */
        private static final long serialVersionUID = 6411527075103472113L;

        public Pair(final K key, final V value) {
            super(key, value);
        }
     }    
    static class MyInput {
        private final BufferedReader in;
        private static int pos;
        private static int readLen;
        private static final char[] buffer = new char[1024 * 8];
        private static char[] str = new char[500 * 8 * 2];
        private static boolean[] isDigit = new boolean[256];
        private static boolean[] isSpace = new boolean[256];
        private static boolean[] isLineSep = new boolean[256];
 
        static {
            for (int i = 0; i < 10; i++) {
                isDigit['0' + i] = true;
            }
            isDigit['-'] = true;
            isSpace[' '] = isSpace['\r'] = isSpace['\n'] = isSpace['\t'] = true;
            isLineSep['\r'] = isLineSep['\n'] = true;
        }
 
        public MyInput(InputStream is) {
            in = new BufferedReader(new InputStreamReader(is));
        }
 
        public int read() {
            if (pos >= readLen) {
                pos = 0;
                try {
                    readLen = in.read(buffer);
                } catch (IOException e) {
                    throw new RuntimeException();
                }
                if (readLen <= 0) {
                    throw new MyInput.EndOfFileRuntimeException();
                }
            }
            return buffer[pos++];
        }
 
        public int nextInt() {
            int len = 0;
            str[len++] = nextChar();
            len = reads(len, isSpace);
            int i = 0;
            int ret = 0;
            if (str[0] == '-') {
                i = 1;
            }
            for (; i < len; i++) ret = ret * 10 + str[i] - '0';
            if (str[0] == '-') {
                ret = -ret;
            }
            return ret;
        }
 
        public long nextLong() {
            int len = 0;
            str[len++] = nextChar();
            len = reads(len, isSpace);
            int i = 0;
            long ret = 0L;
            if (str[0] == '-') {
                i = 1;
            }
            for (; i < len; i++) ret = ret * 10 + str[i] - '0';
            if (str[0] == '-') {
                ret = -ret;
            }
            return ret;
        }
 
       public String nextString() {
        	String ret = new String(nextDChar()).trim();
            return ret;
        }
 
        public char[] nextDChar() {
            int len = 0;
            len = reads(len, isSpace);
            char[] ret = new char[len + 1];
            for (int i=0; i < len; i++)		ret[i] = str[i];
            ret[len] = 0x00;
            return ret;
        }
 
        public char nextChar() {
            while (true) {
                final int c = read();
                if (!isSpace[c]) {
                    return (char) c;
                }
            }
        }
 
        int reads(int len, boolean[] accept) {
            try {
                while (true) {
                    final int c = read();
                    if (accept[c]) {
                        break;
                    }
                    if (str.length == len) {
                        char[] rep = new char[str.length * 3 / 2];
                        System.arraycopy(str, 0, rep, 0, str.length);
                        str = rep;
                    }
                    str[len++] = (char) c;
                }
            } catch (MyInput.EndOfFileRuntimeException e) {
            }
            return len;
        }
 
        static class EndOfFileRuntimeException extends RuntimeException {
        }
    }
}


Measured memory_bytes: 107704