oj.uz

Submission #892794

# Submission time Handle Problem Language Result Execution time Memory
892794 2023-12-26T01:52:54 Z ayalla Feast (NOI19_feast) C++14
100 / 100
 165 ms 9552 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
 
template <class T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
 
#define int long long int
#define pb push_back
#define pi pair<int, int>
#define pii pair<int, pi>
#define fir first
#define sec second
#define MAXN 300005
#define mod 998244353
 
int n, k;
int a[MAXN];
 
pi solve(int lambda)
{
  vector<int> dp(n + 1);
  vector<int> cnt(n + 1);
  dp[0] = 0;
  cnt[0] = 0;
  pi best = {0, 0};
  pi curr = {0, 0};
  auto f = [&](pi x)
  {
    return dp[x.fir] + x.sec;
  };
  for (int i = 1; i <= n; i++)
  {
    dp[i] = dp[i - 1];
    cnt[i] = cnt[i - 1];
    int id = i - 1;
    best.sec += a[id];
    if (f(best) < f({i - 1, a[id]}))
    {
      best = {i - 1, a[id]};
    }
    else if (f(best) == f({i - 1, a[id]}) && cnt[best.fir] > cnt[i - 1])
    {
      best = {i - 1, a[id]};
    }
    int s = dp[best.fir] + best.sec - lambda;
    if (s > dp[i])
    {
      dp[i] = s;
      cnt[i] = cnt[best.fir] + 1;
    }
  }
  return {dp[n], cnt[n]};
}
int aliens_trick()
{
  int l = 0, r = 1e15;
  while (l < r)
  {
    int mid = (l + r) >> 1;
    pi ans = solve(mid);
    (ans.sec > k) ? l = mid + 1 : r = mid;
  }
  pi ans = solve(l);
  return ans.fir + (l * ans.sec);
}
signed main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cin >> n >> k;
  for (int i = 0; i < n; i++)
    cin >> a[i];
  cout << aliens_trick() << endl;
  return 0;
}

Compilation message

feast.cpp: In function 'std::pair<long long int, long long int> solve(long long int)':
feast.cpp:29:6: warning: variable 'curr' set but not used [-Wunused-but-set-variable]
   29 |   pi curr = {0, 0};
      |      ^~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 121 ms 7392 KB Output is correct
2 Correct 110 ms 7552 KB Output is correct
3 Correct 110 ms 7716 KB Output is correct
4 Correct 72 ms 7516 KB Output is correct
5 Correct 92 ms 7744 KB Output is correct
6 Correct 105 ms 7432 KB Output is correct
7 Correct 107 ms 9316 KB Output is correct
8 Correct 110 ms 7680 KB Output is correct
9 Correct 106 ms 7428 KB Output is correct
10 Correct 113 ms 7576 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 103 ms 7456 KB Output is correct
2 Correct 104 ms 7624 KB Output is correct
3 Correct 102 ms 7612 KB Output is correct
4 Correct 104 ms 7516 KB Output is correct
5 Correct 90 ms 7512 KB Output is correct
6 Correct 103 ms 7504 KB Output is correct
7 Correct 106 ms 7612 KB Output is correct
8 Correct 71 ms 7592 KB Output is correct
9 Correct 69 ms 7400 KB Output is correct
10 Correct 86 ms 7648 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 132 ms 7516 KB Output is correct
2 Correct 135 ms 7640 KB Output is correct
3 Correct 126 ms 7504 KB Output is correct
4 Correct 130 ms 7412 KB Output is correct
5 Correct 132 ms 7460 KB Output is correct
6 Correct 139 ms 7756 KB Output is correct
7 Correct 133 ms 7540 KB Output is correct
8 Correct 93 ms 7444 KB Output is correct
9 Correct 132 ms 7556 KB Output is correct
10 Correct 141 ms 7644 KB Output is correct

Subtask #4
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 344 KB Output is correct
7 Correct 0 ms 348 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 348 KB Output is correct

Subtask #5
11.0 / 11.0

# 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 344 KB Output is correct
7 Correct 0 ms 348 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 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 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 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct

Subtask #6
20.0 / 20.0

# 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 344 KB Output is correct
7 Correct 0 ms 348 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 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 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 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 344 KB Output is correct

Subtask #7
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 121 ms 7392 KB Output is correct
2 Correct 110 ms 7552 KB Output is correct
3 Correct 110 ms 7716 KB Output is correct
4 Correct 72 ms 7516 KB Output is correct
5 Correct 92 ms 7744 KB Output is correct
6 Correct 105 ms 7432 KB Output is correct
7 Correct 107 ms 9316 KB Output is correct
8 Correct 110 ms 7680 KB Output is correct
9 Correct 106 ms 7428 KB Output is correct
10 Correct 113 ms 7576 KB Output is correct
11 Correct 103 ms 7456 KB Output is correct
12 Correct 104 ms 7624 KB Output is correct
13 Correct 102 ms 7612 KB Output is correct
14 Correct 104 ms 7516 KB Output is correct
15 Correct 90 ms 7512 KB Output is correct
16 Correct 103 ms 7504 KB Output is correct
17 Correct 106 ms 7612 KB Output is correct
18 Correct 71 ms 7592 KB Output is correct
19 Correct 69 ms 7400 KB Output is correct
20 Correct 86 ms 7648 KB Output is correct
21 Correct 132 ms 7516 KB Output is correct
22 Correct 135 ms 7640 KB Output is correct
23 Correct 126 ms 7504 KB Output is correct
24 Correct 130 ms 7412 KB Output is correct
25 Correct 132 ms 7460 KB Output is correct
26 Correct 139 ms 7756 KB Output is correct
27 Correct 133 ms 7540 KB Output is correct
28 Correct 93 ms 7444 KB Output is correct
29 Correct 132 ms 7556 KB Output is correct
30 Correct 141 ms 7644 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 344 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 1 ms 348 KB Output is correct
52 Correct 1 ms 348 KB Output is correct
53 Correct 1 ms 348 KB Output is correct
54 Correct 1 ms 348 KB Output is correct
55 Correct 1 ms 348 KB Output is correct
56 Correct 1 ms 348 KB Output is correct
57 Correct 1 ms 348 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 1 ms 344 KB Output is correct
61 Correct 164 ms 7452 KB Output is correct
62 Correct 160 ms 9552 KB Output is correct
63 Correct 145 ms 7364 KB Output is correct
64 Correct 165 ms 7512 KB Output is correct
65 Correct 151 ms 7528 KB Output is correct
66 Correct 129 ms 7456 KB Output is correct
67 Correct 162 ms 7412 KB Output is correct
68 Correct 117 ms 7588 KB Output is correct
69 Correct 130 ms 7404 KB Output is correct
70 Correct 94 ms 7356 KB Output is correct