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Submission #483335

# Submission time Handle Problem Language Result Execution time Memory
483335 2021-10-28T18:18:44 Z BERNARB01 Global Warming (CEOI18_glo) C++17
0 / 100
 2 ms 460 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = (int) 2e3 + 9;
const int inf = (int) 1e9 + 9;

long long n, x, a[N], lis_dp[N];

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cin >> n >> x;
  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }
  int ans = 1;
  for (int ii = n - 1; ii >= 0; ii--) {
    a[ii] += x;
    fill(lis_dp, lis_dp + n, inf);
    for (int i = 0; i < n; i++) {
      int j = lower_bound(lis_dp, lis_dp + n, a[i]) - lis_dp;
      lis_dp[j] = a[i];
      ans = max(ans, j + 1);
    }
  }
  for (int ii = 0; ii < n; ii++) {
    a[ii] -= 2 * x;
    fill(lis_dp, lis_dp + n, inf);
    for (int i = 0; i < n; i++) {
      int j = lower_bound(lis_dp, lis_dp + n, a[i]) - lis_dp;
      lis_dp[j] = a[i];
      ans = max(ans, j + 1);
    }
  }
  cout << ans << '\n';
  return 0;
}

Subtask #1
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 Incorrect 0 ms 204 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
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 Incorrect 0 ms 204 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
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 Incorrect 0 ms 204 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 460 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 460 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 460 KB Execution killed with signal 11
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 Incorrect 0 ms 204 KB Output isn't correct
4 Halted 0 ms 0 KB -