oj.uz

Submission #892788

# Submission time Handle Problem Language Result Execution time Memory
892788 2023-12-26T00:43:39 Z ayalla Feast (NOI19_feast) C++14
100 / 100
 176 ms 12356 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 * k);
}
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 111 ms 7372 KB Output is correct
2 Correct 107 ms 7492 KB Output is correct
3 Correct 114 ms 7568 KB Output is correct
4 Correct 77 ms 7928 KB Output is correct
5 Correct 93 ms 7588 KB Output is correct
6 Correct 115 ms 7376 KB Output is correct
7 Correct 107 ms 7448 KB Output is correct
8 Correct 119 ms 7656 KB Output is correct
9 Correct 110 ms 7548 KB Output is correct
10 Correct 112 ms 7460 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 121 ms 7428 KB Output is correct
2 Correct 113 ms 7608 KB Output is correct
3 Correct 106 ms 7444 KB Output is correct
4 Correct 87 ms 7516 KB Output is correct
5 Correct 112 ms 10188 KB Output is correct
6 Correct 116 ms 8780 KB Output is correct
7 Correct 89 ms 8760 KB Output is correct
8 Correct 113 ms 10424 KB Output is correct
9 Correct 102 ms 10188 KB Output is correct
10 Correct 109 ms 8696 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 135 ms 9504 KB Output is correct
2 Correct 133 ms 7396 KB Output is correct
3 Correct 143 ms 10000 KB Output is correct
4 Correct 139 ms 7412 KB Output is correct
5 Correct 151 ms 9544 KB Output is correct
6 Correct 118 ms 7564 KB Output is correct
7 Correct 100 ms 7508 KB Output is correct
8 Correct 135 ms 7480 KB Output is correct
9 Correct 139 ms 7528 KB Output is correct
10 Correct 137 ms 7556 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 1 ms 344 KB Output is correct
7 Correct 0 ms 360 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 1 ms 344 KB Output is correct
7 Correct 0 ms 360 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 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 1 ms 600 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 1 ms 344 KB Output is correct
7 Correct 0 ms 360 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 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 1 ms 600 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 492 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 472 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct

Subtask #7
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 111 ms 7372 KB Output is correct
2 Correct 107 ms 7492 KB Output is correct
3 Correct 114 ms 7568 KB Output is correct
4 Correct 77 ms 7928 KB Output is correct
5 Correct 93 ms 7588 KB Output is correct
6 Correct 115 ms 7376 KB Output is correct
7 Correct 107 ms 7448 KB Output is correct
8 Correct 119 ms 7656 KB Output is correct
9 Correct 110 ms 7548 KB Output is correct
10 Correct 112 ms 7460 KB Output is correct
11 Correct 121 ms 7428 KB Output is correct
12 Correct 113 ms 7608 KB Output is correct
13 Correct 106 ms 7444 KB Output is correct
14 Correct 87 ms 7516 KB Output is correct
15 Correct 112 ms 10188 KB Output is correct
16 Correct 116 ms 8780 KB Output is correct
17 Correct 89 ms 8760 KB Output is correct
18 Correct 113 ms 10424 KB Output is correct
19 Correct 102 ms 10188 KB Output is correct
20 Correct 109 ms 8696 KB Output is correct
21 Correct 135 ms 9504 KB Output is correct
22 Correct 133 ms 7396 KB Output is correct
23 Correct 143 ms 10000 KB Output is correct
24 Correct 139 ms 7412 KB Output is correct
25 Correct 151 ms 9544 KB Output is correct
26 Correct 118 ms 7564 KB Output is correct
27 Correct 100 ms 7508 KB Output is correct
28 Correct 135 ms 7480 KB Output is correct
29 Correct 139 ms 7528 KB Output is correct
30 Correct 137 ms 7556 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 1 ms 344 KB Output is correct
37 Correct 0 ms 360 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 1 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 1 ms 344 KB Output is correct
49 Correct 0 ms 344 KB Output is correct
50 Correct 1 ms 600 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 492 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 472 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 146 ms 10396 KB Output is correct
62 Correct 166 ms 10664 KB Output is correct
63 Correct 146 ms 12356 KB Output is correct
64 Correct 176 ms 10548 KB Output is correct
65 Correct 155 ms 10956 KB Output is correct
66 Correct 129 ms 10520 KB Output is correct
67 Correct 148 ms 10436 KB Output is correct
68 Correct 144 ms 10552 KB Output is correct
69 Correct 93 ms 10416 KB Output is correct
70 Correct 135 ms 10312 KB Output is correct