Submission #701459

#	Time	Username	Problem	Language	Result	Execution time	Memory
701459		Abrar_Al_Samit	New Home (APIO18_new_home)	C++17	0 / 100	2020 ms	206384 KiB

new_home

#include<bits/stdc++.h>
using namespace std;

const int nax = 3e5 + 10;

int l[nax];
int x[nax], t[nax];
int pos[nax];
set<int>live[nax];
int ans[nax];

void PlayGround() {
  int n, q, k;
  cin>>n>>k>>q;

  vector<int>imp;

  for(int i=0; i<n; ++i) {
    cin>>x[i]>>t[i];

    int a, b;
    cin>>a>>b;

    live[t[i]].insert(x[i]);
  }

  bool nok = false;
  for(int i=1; i<=k; ++i) if(live[i].empty()) nok = true;

  if(nok) {
    for(int i=0; i<q; ++i) {
      cout<<"-1\n";
    }
    return;
  }

  map<int,vector<int>>query;
  for(int i=0; i<q; ++i) {
    int x, y;
    cin>>x>>y;

    pos[i] = x;

    query[x].push_back(i);
    imp.push_back(x);
  }

  map<int, vector<int>>ch;
  for(int i=1; i<=k; ++i) {

    for(auto it=live[i].begin(); it!=live[i].end(); ++it) {
      imp.push_back(*it);
      ch[*it].push_back(i);
      if(it==live[i].begin()) continue;

      int md = (*it + *prev(it)) / 2;
      ch[md].push_back(i);
      imp.push_back(md);
    }
  }


  sort(imp.begin(), imp.end());
  imp.resize(unique(imp.begin(), imp.end())-imp.begin());

  multiset<int>sm, bg;
  for(int pl : imp) {
    for(int j : ch[pl]) {
      if(*live[j].begin()==pl) {
        if(bg.find(pl)!=bg.end()) bg.erase(bg.find(pl));
        sm.insert(pl);
      } else {
        sm.erase(sm.find(*live[j].begin()));
        live[j].erase(live[j].begin());
        bg.insert(*live[j].begin());
      }
    }

    for(int j : query[pl]) {
      int d1 = 0;
      if(!sm.empty()) {
        d1 = pl - *sm.begin();
      }
      int d2 = 0;
      if(!bg.empty()) {
        d2 = *prev(bg.end()) - pl;
      }
      ans[j] = max(d1, d2);
    }
  }

  for(int i=0; i<q; ++i) {
    cout<<ans[i]<<'\n';
  }
  // cerr << "Time elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  PlayGround();
  return 0;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 7
• Subtask 3: 0 / 10
• Subtask 4: 0 / 23
• Subtask 5: 0 / 35
• Subtask 6: 0 / 20