Submission #652169

#	Time	Username	Problem	Language	Result	Execution time	Memory
652169		pauloamed	Global Warming (CEOI18_glo)	C++14	52 / 100	48 ms	1960 KiB

glo

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

const int MAXN = 200010;

int N, X;
int v[MAXN];

int main(){
  cin.tie(NULL)->sync_with_stdio(false);
  cin >> N >> X;
  for(int i = 0; i < N; ++i) cin >> v[i];

  vector<int> lis;
  int size_0 = 0;
  for(int i = 0; i < N; ++i){
    {
      auto it = lower_bound(lis.begin(), lis.end(), v[i]+X);
      if(it == lis.end()) lis.push_back(v[i]+X);
      else *it = v[i]+X;
    }
    
    {
      auto it = lower_bound(lis.begin(), lis.end(), v[i]);
      assert(it != lis.end());
      auto pos = min((int)(it - lis.begin()), size_0);
      lis[pos] = min(v[i], lis[pos]);
      size_0 = max(size_0, pos + 1);
    }

    // for(int j = 0; j < lis.size(); ++j){
    //   cout << lis[j] << " ";
    // }
    // cout << "\n";
  }
  cout << lis.size() << "\n";
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 13
• Subtask 4: 10 / 10
• Subtask 5: 20 / 20
• Subtask 6: 17 / 17
• Subtask 7: 0 / 25