Submission #1104009

#	Time	Username	Problem	Language	Result	Execution time	Memory
1104009		vjudge1	Global Warming (CEOI18_glo)	C++17	38 / 100	2066 ms	1768 KiB

glo

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

const int N = 2e5 + 3;
int ar[N];

int main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  int n, x; cin >> n >> x;
  for(int i=1; i<=n; ++i) cin >> ar[i];

  if(x == 0) {
    vector<int> lis;
    for(int i=1; i<=n; ++i) {
      auto t = lower_bound(lis.begin(), lis.end(), ar[i]);
      if(t == lis.end()) {
        lis.emplace_back(ar[i]);
      }else {
        *t = ar[i];
      }
    }

    cout << lis.size() << '\n';
    return 0;
  }

  int res = 0;
  for(int i=1; i<=n; ++i) {
    ar[i] -= x;

    vector<int> lis;
    for(int i=1; i<=n; ++i) {
      auto t = lower_bound(lis.begin(), lis.end(), ar[i]);
      if(t == lis.end()) {
        lis.emplace_back(ar[i]);
      }else {
        *t = ar[i];
      }
    }

    res = max(res, (int)lis.size());
  }

  cout << res << '\n';
  return 0;
}

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