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Submission #973310

# Submission time Handle Problem Language Result Execution time Memory
973310 2024-05-01T18:00:07 Z njoop Global Warming (CEOI18_glo) C++17
100 / 100
 49 ms 4316 KB 
#include <bits/stdc++.h>

using namespace std;

int n, x, idx, arr[200010], pre[200010], ans;
vector<int> dp;

int main() {
    cin.tie(0)->sync_with_stdio(0);
    cin >> n >> x;
    for(int i=1; i<=n; i++) {
        cin >> arr[i];
        idx = lower_bound(dp.begin(), dp.end(), arr[i]) - dp.begin();
        if(idx == dp.size()) dp.push_back(arr[i]);
        else dp[idx] = arr[i];
        pre[i] = idx+1;
        ans = max(ans, pre[i]);
    }
    dp.clear();
    for(int i=n; i>0; i--) {
        idx = lower_bound(dp.begin(), dp.end(), -arr[i]+x) - dp.begin();
        ans = max(ans, pre[i] + idx);
        idx = lower_bound(dp.begin(), dp.end(), -arr[i]) - dp.begin();
        if(idx == dp.size()) dp.push_back(-arr[i]);
        else dp[idx] = -arr[i];
    }
    cout << ans;
    return 0;
}

Compilation message

glo.cpp: In function 'int main()':
glo.cpp:14:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |         if(idx == dp.size()) dp.push_back(arr[i]);
      |            ~~~~^~~~~~~~~~~~
glo.cpp:24:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |         if(idx == dp.size()) dp.push_back(-arr[i]);
      |            ~~~~^~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 476 KB Output is correct
23 Correct 0 ms 464 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 2028 KB Output is correct
2 Correct 45 ms 3768 KB Output is correct
3 Correct 45 ms 3812 KB Output is correct
4 Correct 47 ms 3728 KB Output is correct
5 Correct 25 ms 3548 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 860 KB Output is correct
2 Correct 11 ms 1116 KB Output is correct
3 Correct 10 ms 1116 KB Output is correct
4 Correct 6 ms 1372 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 5 ms 1272 KB Output is correct
7 Correct 8 ms 1116 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 1116 KB Output is correct
2 Correct 19 ms 2140 KB Output is correct
3 Correct 45 ms 3932 KB Output is correct
4 Correct 23 ms 3548 KB Output is correct
5 Correct 11 ms 2012 KB Output is correct
6 Correct 18 ms 3548 KB Output is correct
7 Correct 22 ms 4316 KB Output is correct
8 Correct 15 ms 2140 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 476 KB Output is correct
23 Correct 0 ms 464 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 43 ms 2028 KB Output is correct
28 Correct 45 ms 3768 KB Output is correct
29 Correct 45 ms 3812 KB Output is correct
30 Correct 47 ms 3728 KB Output is correct
31 Correct 25 ms 3548 KB Output is correct
32 Correct 10 ms 860 KB Output is correct
33 Correct 11 ms 1116 KB Output is correct
34 Correct 10 ms 1116 KB Output is correct
35 Correct 6 ms 1372 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 5 ms 1272 KB Output is correct
38 Correct 8 ms 1116 KB Output is correct
39 Correct 18 ms 1116 KB Output is correct
40 Correct 19 ms 2140 KB Output is correct
41 Correct 45 ms 3932 KB Output is correct
42 Correct 23 ms 3548 KB Output is correct
43 Correct 11 ms 2012 KB Output is correct
44 Correct 18 ms 3548 KB Output is correct
45 Correct 22 ms 4316 KB Output is correct
46 Correct 15 ms 2140 KB Output is correct
47 Correct 21 ms 2140 KB Output is correct
48 Correct 21 ms 2204 KB Output is correct
49 Correct 49 ms 3924 KB Output is correct
50 Correct 21 ms 3544 KB Output is correct
51 Correct 20 ms 2908 KB Output is correct
52 Correct 22 ms 3804 KB Output is correct
53 Correct 19 ms 3804 KB Output is correct
54 Correct 23 ms 4316 KB Output is correct
55 Correct 35 ms 3864 KB Output is correct