# Original solution
from ctypes import *
import subprocess as sp
from operator import itemgetter
import sys
import os.path

set_code = r"""
#include <set>

std::set<int> s;

void add(int x) {
    s.insert(x);
}

bool find(int x) {
    return s.find(x) != s.end();
}

void remove(int x) {
    s.erase(x);
}

bool empty() {
	return s.empty();
}

int getMin() {
	return *s.begin();
}
"""

class CppSet:
	counter = 0

	def __init__(self):
		lib_name = './hoge{}.so'.format(CppSet.counter)

		if not os.path.exists(lib_name):
			code_file_name = "tmp.cpp"
			with open(code_file_name, "w") as f:
				f.write(set_code)

			CppSet.counter += 1
			sp.Popen(['g++', '-fPIC', '-shared', '-std=c++11', code_file_name, '-o', lib_name]).communicate()

		lib = CDLL(lib_name)
		self.add = getattr(lib, "_Z3addi")
		self.find = CFUNCTYPE(c_bool, c_int)(
						("_Z4findi", lib),
						((1, "x"), )
					)
		self.remove = getattr(lib, "_Z6removei")
		self.empty = CFUNCTYPE(c_bool)(
						("_Z5emptyv", lib),
						()
					)

		self.getMin = CFUNCTYPE(c_int)(
						("_Z6getMinv", lib),
						()
					)

def main():
	N, Q = map(int, sys.stdin.readline().split())
	tmp = [tuple(map(int, sys.stdin.readline().split())) for _ in range(N)]
	stx = [(s - x, 1, x) for s, t, x in tmp] + [(t - x, -1, x) for s, t, x in tmp]
	stx.sort()
	
	D = [int(sys.stdin.readline()) for _ in range(Q)] 
	ans = [-1]*Q

	idx = 0
	stx_len = len(stx)
	se = CppSet()
	for i, d in enumerate(D):
		while idx < stx_len:
			t, com, x = stx[idx]
			if t > d:
				break
			if com == 1:
				se.add(x)
			else:
				se.remove(x)
			idx += 1
		ans[i] = (-1 if se.empty() else se.getMin())

	print(*ans, sep='\n')

if __name__ == "__main__":
	main()


# Optimized solution
from ctypes import *
import subprocess as sp
from operator import itemgetter
import sys
import os.path

set_code = r"""
#include <set>

std::set<int> s;

void add(int x) {
    s.insert(x);
}

bool find(int x) {
    return s.find(x) != s.end();
}

void remove(int x) {
    s.erase(x);
}

bool empty() {
	return s.empty();
}

int getMin() {
	return *s.begin();
}
"""

class CppSet:
	counter = 0

	def __init__(self):
		lib_name = './hoge{}.so'.format(CppSet.counter)

		code_file_name = "tmp.cpp"
		with open(code_file_name, "w") as f:
			f.write(set_code)

		CppSet.counter += 1
		sp.Popen(['g++', '-fPIC', '-shared', '-std=c++11', code_file_name, '-o', lib_name]).communicate()

		lib = CDLL(lib_name)
		self.add = getattr(lib, "_Z3addi")
		self.find = CFUNCTYPE(c_bool, c_int)(
						("_Z4findi", lib),
						((1, "x"), )
					)
		self.remove = getattr(lib, "_Z6removei")
		self.empty = CFUNCTYPE(c_bool)(
						("_Z5emptyv", lib),
						()
					)

		self.getMin = CFUNCTYPE(c_int)(
						("_Z6getMinv", lib),
						()
					)

def main():
	N, Q = map(int, sys.stdin.readline().split())
	tmp = [tuple(map(int, sys.stdin.readline().split())) for _ in range(N)]
	stx = [(s - x, 1, x) for s, t, x in tmp] + [(t - x, -1, x) for s, t, x in tmp]
	stx.sort()
	
	D = [int(sys.stdin.readline()) for _ in range(Q)] 
	ans = [-1]*Q

	idx = 0
	stx_len = len(stx)
	se = CppSet()
	for i, d in enumerate(D):
		while idx < stx_len:
			t, com, x = stx[idx]
			if t > d:
				break
			if com == 1:
				se.add(x)
			else:
				se.remove(x)
			idx += 1
		ans[i] = (-1 if se.empty() else se.getMin())

	print(*ans, sep='\n')

if __name__ == "__main__":
	main()