oj.uz

Submission #515715

# Submission time Handle Problem Language Result Execution time Memory
515715 2022-01-19T14:26:42 Z MilosMilutinovic Global Warming (CEOI18_glo) C++14
38 / 100
 2000 ms 6288 KB 
#include <bits/stdc++.h>

using namespace std;

template <typename T>
class fenwick {
  public:
  vector<T> fenw;
  int n;
  fenwick(int _n) : n(_n) {
    fenw.resize(n);
  }
  void modify(int x, T v) {
    while (x < n) {
      fenw[x] += v;
      x |= (x + 1);
    }
  }
  T get(int x) {
    T v{};
    while (x >= 0) {
      v += fenw[x];
      x = (x & (x + 1)) - 1;
    }
    return v;
  }
};
struct node {
  int a = 0; // don't forget to set default value
  inline void operator += (node &other) {
    a = max(a, other.a);
  }
};

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, x;
  cin >> n >> x;
  vector<int> a(n);
  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }
  auto Solve = [&](vector<int> v) {
    vector<int> cs;
    for (int i = 0; i < n; i++) {
      cs.push_back(v[i]);
    }
    sort(cs.begin(), cs.end());
    cs.erase(unique(cs.begin(), cs.end()), cs.end());
    fenwick<node> fenw(n);
    vector<int> dp(n);
    for (int i = 0; i < n; i++) {
      v[i] = lower_bound(cs.begin(), cs.end(), v[i]) - cs.begin();
      dp[i] = fenw.get(v[i] - 1).a + 1;
      fenw.modify(v[i], {dp[i]});
    }
    return *max_element(dp.begin(), dp.end());
  };
  int ans = Solve(a);
  if (x == 0) {
    cout << ans << '\n'; // lol
    return 0;
  }
  for (int i = 0; i < n; i++) {
    a[n - i - 1] += x;
    ans = max(ans, Solve(a));
  }
  for (int i = 0; i < n; i++) {
    a[i] -= x;
    ans = max(ans, Solve(a));
  }
  cout << ans << '\n';
  return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 198 ms 312 KB Output is correct
20 Correct 198 ms 332 KB Output is correct
21 Correct 196 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 108 ms 332 KB Output is correct
24 Correct 109 ms 332 KB Output is correct
25 Correct 98 ms 332 KB Output is correct
26 Correct 135 ms 332 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 4428 KB Output is correct
2 Correct 66 ms 6200 KB Output is correct
3 Correct 66 ms 6188 KB Output is correct
4 Correct 68 ms 6288 KB Output is correct
5 Correct 37 ms 5428 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2063 ms 1452 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2071 ms 2780 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 198 ms 312 KB Output is correct
20 Correct 198 ms 332 KB Output is correct
21 Correct 196 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 108 ms 332 KB Output is correct
24 Correct 109 ms 332 KB Output is correct
25 Correct 98 ms 332 KB Output is correct
26 Correct 135 ms 332 KB Output is correct
27 Correct 72 ms 4428 KB Output is correct
28 Correct 66 ms 6200 KB Output is correct
29 Correct 66 ms 6188 KB Output is correct
30 Correct 68 ms 6288 KB Output is correct
31 Correct 37 ms 5428 KB Output is correct
32 Execution timed out 2063 ms 1452 KB Time limit exceeded
33 Halted 0 ms 0 KB -