#[allow(unused_imports)]
use std::cmp::{max, min};
#[allow(unused_imports)]
use std::collections::{BTreeMap, BTreeSet, BinaryHeap, HashMap, HashSet, VecDeque};
#[allow(unused_imports)]
use std::fs::File;
#[allow(unused_imports)]
use std::io::prelude::*;
#[allow(unused_imports)]
use std::io::Stdin;
#[allow(unused_imports)]
use std::io::{stdin, stdout, BufReader, BufWriter, Write};
#[allow(unused_imports)]
use std::mem::swap;
#[allow(unused_imports)]
use std::str::FromStr;

type BoxResult<T> = Result<T, Box<std::error::Error>>;

fn main() {
    let mut scanner = Scanner::new(stdin());
    let param = scanner.read_vector::<usize>().unwrap();
    let (n, q) = (param[0], param[1]);
    let mut all_values = vec![];
    let mut ranges = vec![];
    for _ in 0..n {
        let line = scanner.read_vector::<i64>().unwrap();
        let (s, t, x) = (line[0], line[1], line[2]);
        ranges.push((x, s - x, t - x));
        all_values.push(s - x);
        all_values.push(t - x);
    }
    let mut arr = vec![];
    for _ in 0..q {
        let t = scanner.read::<i64>().unwrap();
        arr.push(t);
        all_values.push(t);
    }
    all_values.sort();
    all_values.dedup();
    let inv_map = (0..all_values.len()).map(|i| (all_values[i], i)).collect::<HashMap<_, _>>();
    let mut compressed_arr = vec![(vec![], vec![], vec![]); all_values.len()];
    for (x, s, e) in ranges.into_iter() {
        let s_index = *inv_map.get(&s).unwrap();
        let e_index = *inv_map.get(&e).unwrap();
        compressed_arr[s_index].1.push(x);
        compressed_arr[e_index].2.push(x);
    }
    for i in 0..arr.len() {
        let index = *inv_map.get(&arr[i]).unwrap();
        compressed_arr[index].0.push(i);
    }
    let mut min_map = BTreeMap::new();
    let mut ans = vec![-1; q];
    for (walkers, starts, ends) in compressed_arr.into_iter() {
        for val in starts.into_iter() {
            if min_map.contains_key(&val) {
                *min_map.get_mut(&val).unwrap() += 1;
            } else {
                min_map.insert(val, 1);
            }
        }
        for val in ends.into_iter() {
            let count = *min_map.get(&val).unwrap();
            if count == 1 {
                min_map.remove(&val);
            } else {
                *min_map.get_mut(&val).unwrap() -= 1;
            }
        }
        let minimum = if min_map.len() > 0 { *min_map.iter().next().unwrap().0 } else { -1 };
        for index in walkers.into_iter() {
            ans[index] = minimum;
        }
    }

    for val in ans.into_iter() {
        println!("{}", val);
    }
}


#[allow(dead_code)]
struct Scanner<R> {
    reader: BufReader<R>,
    buffer: String,
}

impl<R> Scanner<R>
where
    R: Read,
{
    #[allow(dead_code)]
    fn new(inner: R) -> Scanner<R> {
        let reader = BufReader::new(inner);
        let buffer = String::new();
        Scanner { reader: reader, buffer: buffer }
    }

    #[allow(dead_code)]
    fn with_capacity(capacity: usize, inner: R) -> Scanner<R> {
        let reader = BufReader::with_capacity(capacity, inner);
        let buffer = String::new();
        Scanner { reader: reader, buffer: buffer }
    }

    #[allow(dead_code)]
    fn read<T>(&mut self) -> BoxResult<T>
    where
        T: FromStr,
        T::Err: std::fmt::Debug,
        T::Err: std::error::Error,
        T::Err: 'static,
    {
        self.reader.read_line(&mut self.buffer)?;
        let parsed = self.buffer.trim().parse()?;
        self.buffer.clear();
        Ok(parsed)
    }

    #[allow(dead_code)]
    fn read_vector<T>(&mut self) -> BoxResult<Vec<T>>
    where
        T: FromStr,
        T::Err: std::fmt::Debug,
        T::Err: std::error::Error,
        T::Err: 'static,
    {
        self.reader.read_line(&mut self.buffer)?;
        let parsed_vec = self
            .buffer
            .trim()
            .split_whitespace()
            .map(|s| s.parse())
            .collect::<Result<Vec<_>, _>>()?;
        self.buffer.clear();
        Ok(parsed_vec)
    }

    #[allow(dead_code)]
    fn read_matrix<T>(&mut self, lines: usize) -> BoxResult<Vec<Vec<T>>>
    where
        T: FromStr,
        T::Err: std::fmt::Debug,
        T::Err: std::error::Error,
        T::Err: 'static,
    {
        let mut parsed_matrix = vec![];
        for _ in 0..lines {
            self.reader.read_line(&mut self.buffer)?;
            parsed_matrix.push(
                self.buffer
                    .trim()
                    .split_whitespace()
                    .map(|s| s.parse())
                    .collect::<Result<Vec<_>, _>>()?,
            );
            self.buffer.clear();
        }
        Ok(parsed_matrix)
    }
}



Measured memory_bytes: 104688