oj.uz

Submission #1070609

# Submission time Handle Problem Language Result Execution time Memory
1070609 2024-08-22T15:58:38 Z Boas Radio Towers (IOI22_towers) C++17
23 / 100
 4000 ms 6344 KB 
#include "towers.h"

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;

template <typename T1, typename T2>
using indexed_map = tree<T1, T2, less<T1>, rb_tree_tag, tree_order_statistics_node_update>;
template <typename T>
using indexed_set = indexed_map<T, null_type>;

#define loop(x, i) for (int i = 0; i < (x); i++)
#define loop1(x, i) for (int i = 1; i <= (x); i++)
#define rev(x, i) for (int i = (int)(x) - 1; i >= 0; i--)
#define itloop(x) for (auto it = begin(x); x != end(x); it++)
#define itrev(x) for (auto it = rbegin(x); x != rend(x); it++)
#define INF ((int64_t)(4e18 + 1))
#define INF32 ((int32_t)(2e9 + 1))
#define ALL(x) begin(x), end(x)
#define RALL(x) rbegin(x), rend(x)
#define removeIn(x, l) l.erase(find(ALL(l), x))
#define pb push_back
#define sz(x) (int)(x).size()
#define F first
#define S second
#define var const auto &
#define foreach(l) for (var e : l)

typedef int8_t i8;
typedef int16_t i16;
typedef int32_t i32;
typedef int64_t i64;
typedef pair<int, int> ii;
typedef tuple<int, int, int> iii;
typedef tuple<int, int, int, int> iiii;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<ii> vii;
typedef vector<iii> viii;
typedef vector<vii> vvii;
typedef vector<viii> vviii;
typedef set<int> si;
typedef set<ii> sii;
typedef set<iii> siii;
typedef vector<si> vsi;
typedef vector<sii> vsii;
typedef vector<vsi> vvsi;
typedef vector<string> vstr;
typedef vector<vector<string>> vvstr;
typedef vector<bool> vb;
typedef vector<vb> vvb;

vi h;
vii minTree, maxTree;
int n;
int treeN = 1;

void init(int N, vi H)
{
  h = H;
  n = N;
  while (treeN < N)
    treeN *= 2;
  minTree = vii(treeN * 2, {1e9, 1e9});
  maxTree = vii(treeN * 2, {0, -1e9});
  loop(n, i)
  {
    minTree[treeN + i] = {H[i], i};
    maxTree[treeN + i] = {H[i], -i};
  }
  rev(treeN, i)
  {
    minTree[i] = min(minTree[2 * i + 1], minTree[2 * i]);
    maxTree[i] = max(maxTree[2 * i + 1], maxTree[2 * i]);
  }
}

ii combine(ii a, ii b, bool minOp)
{
  if (minOp)
    return min(a, b);
  return max(a, b);
}

// v, ix
ii query(int i, int l, int r, int ql, int qr, bool minOp)
{
  if (r < ql || qr < l)
    return {1e9 * minOp, 1e9 * minOp};
  int m = l + (r - l) / 2;
  if (ql <= l && r <= qr)
  {
    if (minOp)
      return minTree[i];
    return maxTree[i];
  }
  return combine(query(2 * i, l, m, ql, qr, minOp),
                 query(2 * i + 1, m + 1, r, ql, qr, minOp), minOp);
}

int max_towers(int L, int R, int D)
{
  vi dp(R + 1, 1);
  vi maxDP(R + 1, 1);
  for (int i = R - 2; i >= L; i--)
  {
    int lo = i + 2, hi = R;
    bool suc = 0;
    int lastIx = -1;
    while (hi >= lo)
    {
      int m = lo + (hi - lo) / 2;
      if (i + 1 > m - 1)
      {
        lo = m + 1;
        continue;
      }
      auto [mn, mnIx] = query(1, 0, treeN - 1, i + 2, m, 1);
      auto [mx, mxIx] = query(1, 0, treeN - 1, i + 1, mnIx - 1, 0);
      mxIx *= -1;
      if (mx - max(mn, h[i]) >= D)
      {
        lastIx = mnIx;
        suc = 1;
        if (lo == hi)
          break;
        hi = m;
      }
      else
      {
        lo = m + 1;
      }
    }
    if (suc)
    {
      dp[i] = maxDP[lastIx] + 1;
    }
    maxDP[i] = max(dp[i], maxDP[i + 1]);
  }
  return *max_element(ALL(dp));
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4054 ms 3368 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 3 ms 344 KB Output is correct
3 Correct 3 ms 340 KB Output is correct
4 Correct 2 ms 524 KB Output is correct
5 Correct 3 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 3 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 2 ms 420 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 4 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 6 ms 344 KB Output is correct
21 Correct 6 ms 344 KB Output is correct
22 Correct 6 ms 512 KB Output is correct
23 Correct 7 ms 344 KB Output is correct
24 Correct 5 ms 344 KB Output is correct
25 Correct 2 ms 472 KB Output is correct
26 Correct 7 ms 344 KB Output is correct
27 Correct 6 ms 344 KB Output is correct
28 Correct 6 ms 344 KB Output is correct
29 Correct 6 ms 344 KB Output is correct
30 Correct 8 ms 520 KB Output is correct
31 Correct 6 ms 344 KB Output is correct
32 Correct 5 ms 344 KB Output is correct
33 Correct 6 ms 344 KB Output is correct
34 Correct 5 ms 524 KB Output is correct
35 Correct 6 ms 344 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 3 ms 344 KB Output is correct
3 Correct 3 ms 340 KB Output is correct
4 Correct 2 ms 524 KB Output is correct
5 Correct 3 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 3 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 2 ms 420 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 4 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 6 ms 344 KB Output is correct
21 Correct 6 ms 344 KB Output is correct
22 Correct 6 ms 512 KB Output is correct
23 Correct 7 ms 344 KB Output is correct
24 Correct 5 ms 344 KB Output is correct
25 Correct 2 ms 472 KB Output is correct
26 Correct 7 ms 344 KB Output is correct
27 Correct 6 ms 344 KB Output is correct
28 Correct 6 ms 344 KB Output is correct
29 Correct 6 ms 344 KB Output is correct
30 Correct 8 ms 520 KB Output is correct
31 Correct 6 ms 344 KB Output is correct
32 Correct 5 ms 344 KB Output is correct
33 Correct 6 ms 344 KB Output is correct
34 Correct 5 ms 524 KB Output is correct
35 Correct 6 ms 344 KB Output is correct
36 Correct 97 ms 3160 KB Output is correct
37 Correct 223 ms 5840 KB Output is correct
38 Correct 86 ms 5840 KB Output is correct
39 Correct 191 ms 5720 KB Output is correct
40 Correct 70 ms 5720 KB Output is correct
41 Correct 537 ms 6096 KB Output is correct
42 Correct 20 ms 5720 KB Output is correct
43 Correct 262 ms 6028 KB Output is correct
44 Correct 80 ms 5720 KB Output is correct
45 Correct 18 ms 5720 KB Output is correct
46 Correct 22 ms 5656 KB Output is correct
47 Correct 196 ms 5720 KB Output is correct
48 Correct 114 ms 5840 KB Output is correct
49 Correct 44 ms 5720 KB Output is correct
50 Correct 129 ms 5720 KB Output is correct
51 Correct 197 ms 5840 KB Output is correct
52 Correct 635 ms 6344 KB Output is correct
53 Correct 602 ms 6344 KB Output is correct
54 Correct 606 ms 6096 KB Output is correct
55 Correct 761 ms 6096 KB Output is correct
56 Correct 622 ms 6096 KB Output is correct
57 Correct 641 ms 6044 KB Output is correct
58 Correct 682 ms 6300 KB Output is correct
59 Correct 740 ms 6100 KB Output is correct
60 Correct 610 ms 6096 KB Output is correct
61 Correct 665 ms 6088 KB Output is correct
62 Correct 671 ms 6096 KB Output is correct
63 Correct 690 ms 6096 KB Output is correct
64 Correct 642 ms 6088 KB Output is correct
65 Correct 786 ms 5912 KB Output is correct
66 Correct 741 ms 6100 KB Output is correct
67 Correct 791 ms 6108 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4094 ms 6068 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4069 ms 1920 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 3 ms 344 KB Output is correct
3 Correct 3 ms 340 KB Output is correct
4 Correct 2 ms 524 KB Output is correct
5 Correct 3 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 3 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 2 ms 420 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 4 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 6 ms 344 KB Output is correct
21 Correct 6 ms 344 KB Output is correct
22 Correct 6 ms 512 KB Output is correct
23 Correct 7 ms 344 KB Output is correct
24 Correct 5 ms 344 KB Output is correct
25 Correct 2 ms 472 KB Output is correct
26 Correct 7 ms 344 KB Output is correct
27 Correct 6 ms 344 KB Output is correct
28 Correct 6 ms 344 KB Output is correct
29 Correct 6 ms 344 KB Output is correct
30 Correct 8 ms 520 KB Output is correct
31 Correct 6 ms 344 KB Output is correct
32 Correct 5 ms 344 KB Output is correct
33 Correct 6 ms 344 KB Output is correct
34 Correct 5 ms 524 KB Output is correct
35 Correct 6 ms 344 KB Output is correct
36 Correct 97 ms 3160 KB Output is correct
37 Correct 223 ms 5840 KB Output is correct
38 Correct 86 ms 5840 KB Output is correct
39 Correct 191 ms 5720 KB Output is correct
40 Correct 70 ms 5720 KB Output is correct
41 Correct 537 ms 6096 KB Output is correct
42 Correct 20 ms 5720 KB Output is correct
43 Correct 262 ms 6028 KB Output is correct
44 Correct 80 ms 5720 KB Output is correct
45 Correct 18 ms 5720 KB Output is correct
46 Correct 22 ms 5656 KB Output is correct
47 Correct 196 ms 5720 KB Output is correct
48 Correct 114 ms 5840 KB Output is correct
49 Correct 44 ms 5720 KB Output is correct
50 Correct 129 ms 5720 KB Output is correct
51 Correct 197 ms 5840 KB Output is correct
52 Correct 635 ms 6344 KB Output is correct
53 Correct 602 ms 6344 KB Output is correct
54 Correct 606 ms 6096 KB Output is correct
55 Correct 761 ms 6096 KB Output is correct
56 Correct 622 ms 6096 KB Output is correct
57 Correct 641 ms 6044 KB Output is correct
58 Correct 682 ms 6300 KB Output is correct
59 Correct 740 ms 6100 KB Output is correct
60 Correct 610 ms 6096 KB Output is correct
61 Correct 665 ms 6088 KB Output is correct
62 Correct 671 ms 6096 KB Output is correct
63 Correct 690 ms 6096 KB Output is correct
64 Correct 642 ms 6088 KB Output is correct
65 Correct 786 ms 5912 KB Output is correct
66 Correct 741 ms 6100 KB Output is correct
67 Correct 791 ms 6108 KB Output is correct
68 Execution timed out 4094 ms 6068 KB Time limit exceeded
69 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4054 ms 3368 KB Time limit exceeded
2 Halted 0 ms 0 KB -