#include<bits/stdc++.h>

using namespace std;

using int64 = long long;
const int mod = 1e9 + 7;

const int64 infll = (1LL << 62) - 1;
const int inf = (1 << 30) - 1;

struct IoSetup {
  IoSetup() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(10);
    cerr << fixed << setprecision(10);
  }
} iosetup;


template< typename T1, typename T2 >
ostream &operator<<(ostream &os, const pair< T1, T2 > &p) {
  os << p.first << " " << p.second;
  return os;
}

template< typename T1, typename T2 >
istream &operator>>(istream &is, pair< T1, T2 > &p) {
  is >> p.first >> p.second;
  return is;
}

template< typename T >
ostream &operator<<(ostream &os, const vector< T > &v) {
  for(int i = 0; i < (int) v.size(); i++) {
    os << v[i] << (i + 1 != v.size() ? " " : "");
  }
  return os;
}

template< typename T >
istream &operator>>(istream &is, vector< T > &v) {
  for(T &in : v) is >> in;
  return is;
}

template< typename T1, typename T2 >
inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); }

template< typename T1, typename T2 >
inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); }

template< typename T = int64 >
vector< T > make_v(size_t a) {
  return vector< T >(a);
}

template< typename T, typename... Ts >
auto make_v(size_t a, Ts... ts) {
  return vector< decltype(make_v< T >(ts...)) >(a, make_v< T >(ts...));
}

template< typename T, typename V >
typename enable_if< is_class< T >::value == 0 >::type fill_v(T &t, const V &v) {
  t = v;
}

template< typename T, typename V >
typename enable_if< is_class< T >::value != 0 >::type fill_v(T &t, const V &v) {
  for(auto &e : t) fill_v(e, v);
}

template< int sz >
struct FastInput {
  char buf[sz + 1];
  char *o;

  FastInput() { init(); }

  void init() {
    o = buf;
    buf[fread(buf, sizeof(char), sizeof(char) * sz, stdin)] = '\0';
  }

  int64_t read() {
    int64_t ret = 0, sign = 1;
    while(*o && *o <= 32) ++o;
    if(*o == '-') sign *= -1, ++o;
    while(*o >= '0' && *o <= '9') {
      ret *= 10;
      ret += *o++ - '0';
    }
    return ret * sign;
  }
};

struct HopcroftKarp {
  vector< vector< int > > graph;
  vector< int > dist, match;
  vector< bool > used, vv;

  HopcroftKarp(int n, int m) : graph(n), match(m, -1), used(n) {}

  void add_edge(int u, int v) {
    graph[u].push_back(v);
  }

  void bfs() {
    dist.assign(graph.size(), -1);
    queue< int > que;
    for(int i = 0; i < graph.size(); i++) {
      if(!used[i]) {
        que.emplace(i);
        dist[i] = 0;
      }
    }

    while(!que.empty()) {
      int a = que.front();
      que.pop();
      for(auto &b : graph[a]) {
        int c = match[b];
        if(c >= 0 && dist[c] == -1) {
          dist[c] = dist[a] + 1;
          que.emplace(c);
        }
      }
    }
  }

  bool dfs(int a) {
    vv[a] = true;
    for(auto &b : graph[a]) {
      int c = match[b];
      if(c < 0 || (!vv[c] && dist[c] == dist[a] + 1 && dfs(c))) {
        match[b] = a;
        used[a] = true;
        return (true);
      }
    }
    return (false);
  }

  int bipartite_matching() {
    int ret = 0;
    while(true) {
      bfs();
      vv.assign(graph.size(), false);
      int flow = 0;
      for(int i = 0; i < graph.size(); i++) {
        if(!used[i] && dfs(i)) ++flow;
      }
      if(flow == 0) return (ret);
      ret += flow;
    }
  }

  void output() {
    for(int i = 0; i < match.size(); i++) {
      if(~match[i]) {
        cout << match[i] << "-" << i << endl;
      }
    }
  }
};

int main() {
  int N, Q;
  FastInput< (int) 1e7 > fin;
  N = fin.read();
  Q = fin.read();
  map< int, vector< int > > add;
  for(int i = 0; i < N; i++) {
    int s, t, x;
    s = fin.read();
    t = fin.read();
    x = fin.read();
    s -= x;
    t -= x;
    // sからtに出発する人はxで破滅する
    add[s].emplace_back(x);
    add[t].emplace_back(-x);
  }
  auto it = add.begin();
  multiset< int > st;
  for(int i = 0; i < Q; i++) {
    int d = fin.read();
    while(it != add.end() && it->first <= d) {
      for(auto &v : it->second) {
        if(v >= 0) st.emplace(v);
        else st.erase(st.find(-v));
      }
      ++it;
    }
    if(st.size()) printf("%d\n", *st.begin());
    else puts("-1");
  }
}



Measured memory_bytes: 63744