oj.uz

Submission #868661

# Submission time Handle Problem Language Result Execution time Memory
868661 2023-11-01T08:31:48 Z WLZ Global Warming (CEOI18_glo) C++17
100 / 100
 49 ms 5388 KB 
#include <bits/stdc++.h>
using namespace std;

#ifdef DEBUG
#include "debug.hpp"
#else
#define debug(...) 0
#endif

constexpr int INF = 0x3f3f3f3f;

int main() {
    ios::sync_with_stdio(false); cin.tie(0);

    int n, x; cin >> n >> x;

    vector<int> t(n);
    for (int i = 0; i < n; i++) cin >> t[i];

    vector<int> dp_l(n + 1, INF); dp_l[0] = -INF;
    vector<int> longest(n);
    int ans = 0;
    for (int i = 0; i < n; i++) {
        int j = lower_bound(dp_l.begin(), dp_l.end(), t[i]) - dp_l.begin();
        dp_l[j] = t[i];
        longest[i] = j;
        ans = max(ans, j);
        debug(dp_l);
    }
    debug(longest);

    vector<int> dp_r(n + 1, -INF); dp_r[0] = INF;
    for (int i = n - 1; i >= 0; i--) {
        int k = lower_bound(dp_r.begin(), dp_r.end(), t[i] - x, greater<>()) - dp_r.begin() - 1;
        ans = max(ans, longest[i] + k);
        debug(i, ans, k);

        int j = lower_bound(dp_r.begin(), dp_r.end(), t[i], greater<>()) - dp_r.begin();
        dp_r[j] = t[i];
        debug(dp_r);
    }

    cout << ans << '\n';

    return 0;
}

Compilation message

glo.cpp: In function 'int main()':
glo.cpp:7:20: warning: statement has no effect [-Wunused-value]
    7 | #define debug(...) 0
      |                    ^
glo.cpp:28:9: note: in expansion of macro 'debug'
   28 |         debug(dp_l);
      |         ^~~~~
glo.cpp:7:20: warning: statement has no effect [-Wunused-value]
    7 | #define debug(...) 0
      |                    ^
glo.cpp:30:5: note: in expansion of macro 'debug'
   30 |     debug(longest);
      |     ^~~~~
glo.cpp:7:20: warning: statement has no effect [-Wunused-value]
    7 | #define debug(...) 0
      |                    ^
glo.cpp:36:9: note: in expansion of macro 'debug'
   36 |         debug(i, ans, k);
      |         ^~~~~
glo.cpp:7:20: warning: statement has no effect [-Wunused-value]
    7 | #define debug(...) 0
      |                    ^
glo.cpp:40:9: note: in expansion of macro 'debug'
   40 |         debug(dp_r);
      |         ^~~~~

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 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 460 KB Output is correct
7 Correct 0 ms 456 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 452 KB Output is correct
11 Correct 1 ms 452 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 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 460 KB Output is correct
7 Correct 0 ms 456 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 452 KB Output is correct
11 Correct 1 ms 452 KB Output is correct
12 Correct 0 ms 452 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 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 0 ms 348 KB Output is correct
18 Correct 0 ms 456 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 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 460 KB Output is correct
7 Correct 0 ms 456 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 452 KB Output is correct
11 Correct 1 ms 452 KB Output is correct
12 Correct 0 ms 452 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 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 0 ms 348 KB Output is correct
18 Correct 0 ms 456 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 500 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 5320 KB Output is correct
2 Correct 47 ms 5204 KB Output is correct
3 Correct 47 ms 5388 KB Output is correct
4 Correct 47 ms 5200 KB Output is correct
5 Correct 39 ms 4956 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 1628 KB Output is correct
2 Correct 11 ms 1544 KB Output is correct
3 Correct 11 ms 1628 KB Output is correct
4 Correct 8 ms 1372 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 9 ms 1484 KB Output is correct
7 Correct 9 ms 1628 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 2768 KB Output is correct
2 Correct 21 ms 2844 KB Output is correct
3 Correct 42 ms 5268 KB Output is correct
4 Correct 34 ms 4700 KB Output is correct
5 Correct 18 ms 2608 KB Output is correct
6 Correct 28 ms 4492 KB Output is correct
7 Correct 32 ms 5220 KB Output is correct
8 Correct 17 ms 2896 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 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 460 KB Output is correct
7 Correct 0 ms 456 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 452 KB Output is correct
11 Correct 1 ms 452 KB Output is correct
12 Correct 0 ms 452 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 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 0 ms 348 KB Output is correct
18 Correct 0 ms 456 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 500 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 49 ms 5320 KB Output is correct
28 Correct 47 ms 5204 KB Output is correct
29 Correct 47 ms 5388 KB Output is correct
30 Correct 47 ms 5200 KB Output is correct
31 Correct 39 ms 4956 KB Output is correct
32 Correct 11 ms 1628 KB Output is correct
33 Correct 11 ms 1544 KB Output is correct
34 Correct 11 ms 1628 KB Output is correct
35 Correct 8 ms 1372 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 9 ms 1484 KB Output is correct
38 Correct 9 ms 1628 KB Output is correct
39 Correct 20 ms 2768 KB Output is correct
40 Correct 21 ms 2844 KB Output is correct
41 Correct 42 ms 5268 KB Output is correct
42 Correct 34 ms 4700 KB Output is correct
43 Correct 18 ms 2608 KB Output is correct
44 Correct 28 ms 4492 KB Output is correct
45 Correct 32 ms 5220 KB Output is correct
46 Correct 17 ms 2896 KB Output is correct
47 Correct 23 ms 2908 KB Output is correct
48 Correct 23 ms 3008 KB Output is correct
49 Correct 48 ms 5204 KB Output is correct
50 Correct 36 ms 4692 KB Output is correct
51 Correct 28 ms 3668 KB Output is correct
52 Correct 36 ms 4700 KB Output is correct
53 Correct 30 ms 4692 KB Output is correct
54 Correct 33 ms 5196 KB Output is correct
55 Correct 38 ms 5204 KB Output is correct