import java.io.*;
import java.util.*;
import java.util.Map.Entry;
import java.util.stream.Collectors;

@SuppressWarnings("unused")
public class Main {
	
	//final boolean isDebug = true;
	final boolean isDebug = false;
	String fileName = "input.txt";
	PrintWriter out;
	final int MOD = (int)1e9+7;
	//final int INF = Integer.MAX_VALUE / 2;
	final long INF = Long.MAX_VALUE / 2;
	
	void solve() throws Exception{
		FastIO io = new FastIO();
		int N = io.nextInt();
		int Q = io.nextInt();
		TreeSet<Integer> set = new TreeSet<>();
		
		int[] S = new int[N], T = new int[N], X = new int[N];
		for(int i = 0; i < N; i++){
			S[i] = io.nextInt(); T[i] = io.nextInt()-1;
			X[i] = io.nextInt();
			set.add(S[i]-X[i]); set.add(T[i]-X[i]);
		}
		
		int[] D = new int[Q];
		for(int i = 0; i < Q; i++){
			D[i] = io.nextInt();
			set.add(D[i]);
		}
		
		HashMap<Integer, Integer> map = new HashMap<>();
		for(int i = 0; !set.isEmpty(); i++) map.put(set.pollFirst(), i);
		
		DualSegmentTree seg = new DualSegmentTree(map.size());
		for(int i = 0; i < N; i++) seg.setSegment(map.get(S[i] - X[i]), map.get(T[i] - X[i]) + 1, X[i]);
		
		
		for(int i = 0; i < Q; i++){
			long x = seg.getPoint(map.get(D[i]));
			if(x != Long.MAX_VALUE) io.println(x);
			else io.out.println(-1);
		}
		io.flush();
		
		/*
		long[] get = seg.get();
		for(int i = 0; i < Q; i++){
			long x = get[map.get(D[i])];
			if(x != Long.MAX_VALUE) io.println(x);
			else io.println(-1);
		}
		io.flush();
		*/
	}
	
	/* end solve */
	
	/* main */
	public static void main(String[] args) throws Exception {
		new Main().m();
	}
	
	void m() throws Exception {
		/*
		long S = System.currentTimeMillis();
		sc = (isDebug) ? new FastScanner(new FileInputStream(fileName)) : new FastScanner(System.in);
		out = new PrintWriter(System.out);
		*/
		solve();
		/*
		out.flush();
		long G = System.currentTimeMillis();
		if(isDebug){
			System.out.println("---Debug---");
			System.out.printf("%8d ms\n", (G-S));
		}
		*/
	}
	
	
	
	/* end main */
}
/* end Main */

class DualSegmentTree{
	int sz;
	int n;
	long[] node;
	
	/*作用素で使える単位元*/
	private long e = Long.MAX_VALUE;
	
	/*結合律が成り立ち、更新が可換であるような、各要素への作用素*/
	private long f(long nodeVal, long val){
		return Math.min(nodeVal, val);
	}
	
	/* 単位元で初期化 */
	public DualSegmentTree(int sz){
		this.sz = sz;
		n = 1;
		while(n < sz) n *= 2;
		node = new long[2*n];
		Arrays.fill(node, e);
	}
	
	/* 元配列vでセグメント木を初期化 */
	public DualSegmentTree(long[] v){
		this(v.length);
		for(int i = 0; i < v.length; i++){
			node[i+n] = v[i];
		}
	}
	
	/* 0-indexed:xの要素を取得する */
	public long getPoint(int x){
		x += n;
		long res = node[x];
		while(x > 1){
			x = x / 2;
			res = f(res, node[x]);
		}
		return res;
	}
	
	/* 指定した区間[L,R)に含まれるすべての要素に作用素を適用するクエリ */
	public void setSegment(int L, int R, long val){
		L += n;
		R += n;
		while (L < R) {
			if ((L & 1) != 0){
				node[L] = f(node[L], val);
				L++;
			}
			if ((R & 1) != 0){
				--R;
				node[R] = f(node[R], val);
			}
			L >>= 1;
			R >>= 1;
		}
	}
	
	public long[] get(){
		long[] tmp = new long[2*n];
		tmp[1] = e;
		for(int i = 1; i < n; i++){
			tmp[2*i] = f(tmp[i], node[2*i]);
			tmp[2*i+1] = f(tmp[i], node[2*i+1]);
		}
		long[] res = new long[sz];
		for(int i = 0; i < sz; i++) res[i] = tmp[i+n];
		return res;
	}
}

class FastIO {
	private final InputStream in = System.in;
	private final byte[] buffer = new byte[1024];
	private int read = 0;
	private int length = 0;
	public final PrintWriter out = new PrintWriter(System.out, false);
	public final PrintWriter err = new PrintWriter(System.err, false);

	private boolean hasNextByte() {
		if (read < length) return true;
		else {
			try {
				read = 0;
				length = in.read(buffer);
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return length > 0;
	}

	private int readByte() {
		return hasNextByte() ? buffer[read++] : -1;
	}

	private boolean isPrintableChar(int c) {
		return 33 <= c && c <= 126;
	}

	private boolean isNumber(int c) {
		return '0' <= c && c <= '9';
	}

	public boolean hasNext() {
		while (hasNextByte() && !isPrintableChar(buffer[read])) read++;
		return hasNextByte();
	}

	public char nextChar() {
		if (!hasNextByte())  throw new NoSuchElementException();
		return (char)readByte();
	}

	public String next() {
		if (!hasNext()) throw new NoSuchElementException();
		StringBuilder sb = new StringBuilder();
		int b;
		while (isPrintableChar(b = readByte())) sb.appendCodePoint(b);
		return sb.toString();
	}

	public long nextLong() {
		if (!hasNext()) throw new NoSuchElementException();
		long n = 0;
		boolean minus = false;
		int b = readByte();
		if (b == '-') {
			minus = true;
			b = readByte();
		}
		if (!isNumber(b)) throw new NumberFormatException();
		while (true) {
			if (isNumber(b)) {
				n *= 10;
				n += b - '0';
			} else if (b == -1 || !isPrintableChar(b)) return minus ? -n : n;
			else throw new NumberFormatException();
			b = readByte();
		}
	}

	public int nextInt() {
		long nl = nextLong();
		if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
		return (int) nl;
	}

	public double nextDouble() {
		return Double.parseDouble(next());
	}

	public int[] nextInt(int width) {
		int[] ret = new int[width];
		for (int i = 0;i < width;++ i) ret[i] = nextInt();
		return ret;
	}

	public long[] nextLong(int width) {
		long[] ret = new long[width];
		for (int i = 0;i < width;++ i) ret[i] = nextLong();
		return ret;
	}

	public int[][] nextInt(int width, int height) {
		int[][] ret = new int[height][width];
		for (int i = 0, j;i < height;++ i) for (j = 0;j < width;++ j) ret[i][j] = nextInt();
		return ret;
	}

	public long[][] nextLong(int width, int height) {
		long[][] ret = new long[height][width];
		for (int i = 0, j;i < height;++ i) for (j = 0;j < width;++ j) ret[j][i] = nextLong();
		return ret;
	}

	public boolean[] nextBoolean(char T) {
		char[] s = next().toCharArray();
		boolean[] ret = new boolean[s.length];
		for (int i = 0;i < ret.length;++ i) ret[i] = s[i] == T;
		return ret;
	}

	@Override
	protected void finalize() throws Throwable {
		try {
			super.finalize();
		} finally {
			in.close();
			out.close();
			err.close();
		}
	}

	public void print(boolean b) {
		out.print(b);
	}

	public void print(char c) {
		out.print(c);
	}

	public void print(char[] s) {
		out.print(s);
	}

	public void print(double d) {
		out.print(d);
	}

	public void print(float f) {
		out.print(f);
	}

	public void print(int i) {
		out.print(i);
	}

	public void print(long l) {
		out.print(l);
	}

	public void print(Object obj) {
		out.print(obj);
	}

	public void print(String s) {
		out.print(s);
	}

	public void printf(String format, Object... args) {
		out.printf(format, args);
	}

	public void printf(Locale l, String format, Object... args) {
		out.printf(l, format, args);
	}

	public void println() {
		out.println();
	}

	public void println(boolean b) {
		out.println(b);
	}

	public void println(char c) {
		out.println(c);
	}

	public void println(char[] s) {
		out.println(s);
	}

	public void println(double d) {
		out.println(d);
	}

	public void println(float f) {
		out.println(f);
	}

	public void println(int i) {
		out.println(i);
	}

	public void println(long l) {
		out.println(l);
	}

	public void println(Object obj) {
		out.println(obj);
	}

	public void println(String s) {
		out.println(s);
	}

	public void flush() {
		out.flush();
		err.flush();
	}
}

Measured memory_bytes: 156424