Language: C++

#include <bits/stdc++.h>
#include <algorithm>
#include <cmath>
#include <set>
#include <cstdio>
#include <vector>
#include <iostream>
#include <utility>
#include <queue>
#include <map>

#define fir first
#define sec second
#define sz(s) (s).size()
#define pb push_back
#define get(n) scanf("%d",&n);
#define gets(s) string s;cin >> (s);
#define prfi(n) printf("%d", &n);
#define prfd(n) printf("%lf", &n);
#define All(s) (s).begin(), (s).end()
#define rep(i,j) for(int (i)=0;(i)<(j);(i)++)
#define For(i,j,k) for(int (i)=(j);(i)<(k);(i)++)
#define drep(i,j) for(int (i)=(j);(i)>=0;(i)--)
#define Ford(i,j,k) for(int (i)=(j);i>=(k);i--)
#define vfor(c,v) for(auto (c): (v))
#define lpi(n) for(int i=0;i<(n);i++)
#define lpj(n) for(int j=0;j<(n);j++)
#define lpz(n) for(int z=0;z<(n);z++)
#define mem(a,b) memset(a,b,sizeof(a));
#define dump(x)  std::cout << #x << " = " << (x) << std::endl;
#define debug(x) cout << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << endl;
using ull = unsigned long long int;
using ll = long long;
using ld = long double;
using pii = std::pair<int,int>;
using pll = std::pair<ll, ll>;
using vi = std::vector<int> ;
using vvi = std::vector<vi> ;
using vll = std::vector<ll>;
using vvll = std::vector<vll>;
using vd = std::vector<double> ;
using vvd = std::vector<vd> ;
using qi = std::queue<int> ;
using vpii = std::vector<std::pair<int, int> >;
using vpll = std::vector<pll>;
using namespace std;

const int Mod = (1e9) + 7;
const int INF = 1e9 + 19;
const ll INFL = 1e18 + 19;
const int dx[] = {-1, 0, 0, 1};
const int dy[] = {0, -1, 1, 0};
const int dx2[] = {-1, -1, -1, 0, 0, 0, 1, 1, 1};
const int dy2[] = {1, 0, -1, 1, 0, -1, 1, 0, -1};
//_____________________________________Templates_________________________________________//

template<class T1, class T2> inline void chmin(T1 &a, T2 b){if(a > b) a = b;}
template<class T1, class T2> inline void chmax(T1 &a, T2 b){if(a < b) a = b;}
template<class T> inline void pri(T a){cout << a << endl;}
template<class Z> using vec = vector<Z>;
//mainly use for dynamic prog
template<class T1, class T2>
void update(T1 &a, T2 b){
  a += b;
  if(a > Mod) a %= Mod;
}

inline void IN(void){
  return;
}

template <typename First, typename... Rest>
void IN(First& first, Rest&... rest){
  cin >> first;
  IN(rest...);
  return;
}

inline void OUT(void){
  cout << "\n";
  return;
}

template <typename First, typename... Rest>
void OUT(First first, Rest... rest){
  cout << first << " ";
  OUT(rest...);
  return;
}

bool pairsort(pll pl, pll pr){
  if(pl.first == pr.first)return pl.second > pr.second;
  return pl.first < pr.first;
}

int cntbit(ll a,int n,int j){int res = 0;For(i,j,n){if(a>>i & 1){res++;}}return res;}
vector<int> make_bit(int a){vector<int> res; lpi(32)if(a&(1<<i))res.pb(i);return res;}
bool stdbit(int a, int b){return a&(1 << b); }
int GCD(int a, int b){if(b > a)return GCD(b,a);if(a%b == 0)return b;else return GCD(b, a%b);}
int LCM(int a, int b){return a*b/GCD(a,b);}
int roundup(int a, int b){if(a % b == 0)return a/b;else return (a+b)/b;}
int rounddown(int a, int b){if(a%b == 0)return a/b;else {return (a-b)/b;}}
ll pow(ll a, ll n){ll res = 1;while(n > 0){if(n&1)res *= a; a *= a; n = n >> 1;}return res;}
ll GetDiviserCount(ll N)//約数の個数
{
  ll res = 1;
  For(i,2,sqrt(N)+1)
  {
    ll cnt = 0;
    while(N%i == 0)
    {
      cnt++;
      N /= i;
    }
    res *= (cnt + 1);
    if(N == 1)break;
  }
  if(N != 1)res *= 2;
  return res;
}
vll GetDivisor(ll N)//約数列挙
{
  vll res;
  for(ll i = 1;i*i <= N;i++)
  {
    if(N%i == 0)
    {
      res.pb(i);
      if(i*i != N)res.pb(N/i);
    }
  }
  sort(All(res));
  return res;
}
//_____________________　following sorce code_________________________//
const int max_n = 3 * (1e5) + 1;
const int max_m = 83 * (1e5) + 1;

int n,m,k;
ll N;
int h,w;
vvi tree;
string S;
int a,b,c;
vi v;
int ans;
struct Event
{
  ll t;
  ll x;
  int type;
  Event(int t, int type, int x) : t(t), type(type) , x(x){}
  bool operator<(const Event &a)
  {
    return t < a.t;
  }
};
vector<Event> ev;
int main () {
  cin.tie(0);
  ios::sync_with_stdio(false);
  IN(n,k);
  ev = vector<Event>();
  rep(i,n)
  {
    ll a,b,c;
    IN(a,b,c);
    ev.emplace_back(Event(a-c,1,c));
    ev.emplace_back(Event(b-c,-1,c));
  }
  sort(All(ev));
  /*
  for(auto c : ev)
  {
    cout << c.t << " " << c.type << " " << c.x << endl;
  }
  */
  vec<ll> D(k);
  rep(i,k)
  {
    IN(D[i]);
  }
  multimap<ll> st;
  int idx = 0;
  rep(i,k)
  {
    while(idx < ev.size() && ev[idx].t <= D[i])
    {
      if(ev[idx].type == 1)
      {
        st.insert(ev[idx].x);
      }
      else 
      {
        st.erase(st.find(ev[idx].x));
      }
      idx++;
      //OUT(-1);
    }

    if(st.empty())
    {
      cout << -1 << endl;
    }
    else 
    {
      cout << *st.begin() << endl;
    }
  }
  //cout << ans << endl;
  //for(auto c : ans){cout << c << endl;}
  //cout << fixed << setprecision(15) << ans << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:183:14: error: wrong number of template arguments (1, should be at least 2)
  183 |   multimap<ll> st;
      |              ^
In file included from /usr/include/c++/14/map:63,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:152,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_map.h:72:11: note: provided for 'template<class _Key, class _Tp, class _Compare, class _Alloc> class std::multimap'
   72 |     class multimap;
      |           ^~~~~~~~
a.cc:191:12: error: request for member 'insert' in 'st', which is of non-class type 'int'
  191 |         st.insert(ev[idx].x);
      |            ^~~~~~
a.cc:195:12: error: request for member 'erase' in 'st', which is of non-class type 'int'
  195 |         st.erase(st.find(ev[idx].x));
      |            ^~~~~
a.cc:195:21: error: request for member 'find' in 'st', which is of non-class type 'int'
  195 |         st.erase(st.find(ev[idx].x));
      |                     ^~~~
a.cc:201:11: error: request for member 'empty' in 'st', which is of non-class type 'int'
  201 |     if(st.empty())
      |           ^~~~~
a.cc:207:19: error: request for member 'begin' in 'st', which is of non-class type 'int'
  207 |       cout << *st.begin() << endl;
      |                   ^~~~~