import sys
sys.setrecursionlimit(10**7)
def LI(): return [int(x) for x in sys.stdin.readline().split()]
def LI_(): return [int(x) - 1 for x in sys.stdin.readline().split()]
def LF(): return [float(x) for x in sys.stdin.readline().split()]
def LS(): return sys.stdin.readline().split()
def II(): return int(sys.stdin.readline())
def SI(): return sys.stdin.readline().strip()
MOD = 10 ** 9 + 7
INF = 10 ** 18

from collections.abc import Sequence, Set
from bisect import bisect_left
from itertools import chain

from heapq import heappush, heappop

class HeapqSet():
    def __init__(self):
        self._set = set()
        self._list = list()

    def add(self, a):
        if a in self._set:
            return
        else:
            self._set.add(a)
            heappush(self._list, a)

    def remove(self, a):
        if a not in self._set:
            raise KeyError
        else:
            self._set.remove(a)

    def pop_min(self):
        if not self._set:
            self._list = list()
            return None
        while True:
            a = heappop(self._list)
            if a not in self._set:
                continue
            else:
                self._set.remove(a)
                break
        return a

    def peek_min(self):
        if not self._set:
            self._list = list()
            return None
        while True:
            a = self._list[0]
            if a not in self._set:
                heappop(self._list)
            else:
                break
        return a

    def is_empty(self):
        return self._set

    def __bool__(self):
        return True if self._set else False




def main(): 
    N, Q = LI()
    events = []
    for _ in range(N):
        stx = LI()
        # events.append((s - x, x, True))  # S-X, X, add_flag
        # events.append((t - x, x, False))  # T-X, X, add_flag
        events.append((stx[0] - stx[2], stx[2], True))  # S-X, X, add_flag
        events.append((stx[1] - stx[2], stx[2], False))  # T-X, X, add_flag
    for _ in range(Q):
        events.append((II(), INF, -1))
 
    events.sort(key=lambda x:x[0])  # O(N log N), stable
 
    from array import array
    ans = array('i')

    m = HeapqSet()

    # for time, x, add_flag in events:
    change_flag = True
    min_ = INF
    for txa in events:
        if txa[2] == -1:
            if not m:
                ans.append(-1)
                # ans += '-1\n'
            else:
                if change_flag:
                    min_ = m.peek_min()
                    change_flag = False
                ans.append(min_)
                # ans += str(m[0])+'\n'
        elif txa[2]:
            m.add(txa[1])
            if txa[1] < min_:
                min_ = txa[1]
                change_flag = False
        else:
            m.remove(txa[1])
            if txa[1] == min_ and not not m:
                min_ = m.peek_min()
                change_flag = False
            elif not m:
                min_ = INF
                change_flag = False
 
    # for i in ans: print(i)
    # print('\n'.join(map(str, ans)))
    print('\n'.join(map(str, ans.tolist())))

main()

### FIXED CODE ###

import sys
sys.setrecursionlimit(10**7)
def LI(): return [int(x) for x in sys.stdin.readline().split()]
def LI_(): return [int(x) - 1 for x in sys.stdin.readline().split()]
def LF(): return [float(x) for x in sys.stdin.readline().split()]
def LS(): return sys.stdin.readline().split()
def II(): return int(sys.stdin.readline())
def SI(): return sys.stdin.readline().strip()
MOD = 10 ** 9 + 7

def main(): 
    N, Q = LI()
    STX = []
    for _ in range(N):
        STX.append(LI())
    D = []
    for _ in range(Q):
        D.append(II())

    STX.sort(key=lambda x:x[2])

    ans = [-1] * Q
    skip = [-1] * Q

    from bisect import bisect_left
    for s, t, x in STX:
        left = bisect_left(D, s-x)  # s-x を超える最小のdの位置
        right = bisect_left(D, t-x)  # t-x を超える最小のdの位置

        while left < right:
            if skip[left] == -1:  # 未踏
                ans[left] = x
                skip[left] = right  # つぎにここにきた際は、rightまで見るのをスキップしてよい。
                left += 1
            else:  # 来たことがある
                left = skip[left]  # 以前覚えておいた right まで見るのをスキップする。

    for i in ans: print(i)

main()