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Submission #1104184

# Submission time Handle Problem Language Result Execution time Memory
1104184 2024-10-23T06:29:17 Z vjudge1 Global Warming (CEOI18_glo) C++17
100 / 100
 42 ms 4308 KB 
#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, g; cin >> n >> g;
  for(int i=1; i<=n; ++i) cin >> ar[i];

  int res = 1;
  int dp[n+1];
  dp[0] = 0;
  vector<int> lis;
  for(int i=1; i<=n; ++i) {
    auto t = lower_bound(lis.begin(), lis.end(), ar[i]);
    dp[i] = t - lis.begin() + 1;

    if(t == lis.end()) lis.emplace_back(ar[i]);
    else *t = ar[i];

    //cout << dp[i] << " \n"[i == n]; 
  }

  res = lis.size();
  lis.clear();
  for(int i=n; i>=1; --i) {
    int x = lower_bound(lis.begin(), lis.end(), -ar[i] + 2*g) - lis.begin();

    //cout << "I: " << i << " => ";
    //for(auto x : lis) cout << x << ' ';
    //cout << " | " << x << endl;
    res = max(res, dp[i] + x );

    int y = lower_bound(lis.begin(), lis.end(), -ar[i] + g) - lis.begin();
    if(y == lis.size()) lis.emplace_back(-ar[i] + g);
    else lis[y] = -ar[i] + g;
  }

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

Compilation message

glo.cpp: In function 'int main()':
glo.cpp:37:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |     if(y == lis.size()) lis.emplace_back(-ar[i] + g);
      |        ~~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 368 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 368 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 388 KB Output is correct
18 Correct 1 ms 336 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 368 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 388 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 480 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 1976 KB Output is correct
2 Correct 37 ms 2128 KB Output is correct
3 Correct 41 ms 1872 KB Output is correct
4 Correct 37 ms 1996 KB Output is correct
5 Correct 21 ms 3020 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 1104 KB Output is correct
2 Correct 9 ms 1104 KB Output is correct
3 Correct 9 ms 860 KB Output is correct
4 Correct 5 ms 848 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 6 ms 1360 KB Output is correct
7 Correct 8 ms 1352 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 1260 KB Output is correct
2 Correct 20 ms 1840 KB Output is correct
3 Correct 33 ms 1884 KB Output is correct
4 Correct 21 ms 3296 KB Output is correct
5 Correct 10 ms 2128 KB Output is correct
6 Correct 20 ms 3540 KB Output is correct
7 Correct 26 ms 4308 KB Output is correct
8 Correct 15 ms 1104 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 368 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 388 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 480 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 36 ms 1976 KB Output is correct
28 Correct 37 ms 2128 KB Output is correct
29 Correct 41 ms 1872 KB Output is correct
30 Correct 37 ms 1996 KB Output is correct
31 Correct 21 ms 3020 KB Output is correct
32 Correct 12 ms 1104 KB Output is correct
33 Correct 9 ms 1104 KB Output is correct
34 Correct 9 ms 860 KB Output is correct
35 Correct 5 ms 848 KB Output is correct
36 Correct 1 ms 336 KB Output is correct
37 Correct 6 ms 1360 KB Output is correct
38 Correct 8 ms 1352 KB Output is correct
39 Correct 17 ms 1260 KB Output is correct
40 Correct 20 ms 1840 KB Output is correct
41 Correct 33 ms 1884 KB Output is correct
42 Correct 21 ms 3296 KB Output is correct
43 Correct 10 ms 2128 KB Output is correct
44 Correct 20 ms 3540 KB Output is correct
45 Correct 26 ms 4308 KB Output is correct
46 Correct 15 ms 1104 KB Output is correct
47 Correct 21 ms 1608 KB Output is correct
48 Correct 18 ms 2128 KB Output is correct
49 Correct 42 ms 3812 KB Output is correct
50 Correct 30 ms 3796 KB Output is correct
51 Correct 19 ms 3028 KB Output is correct
52 Correct 21 ms 3284 KB Output is correct
53 Correct 20 ms 3796 KB Output is correct
54 Correct 25 ms 3788 KB Output is correct
55 Correct 34 ms 3924 KB Output is correct