oj.uz

Submission #1035542

# Submission time Handle Problem Language Result Execution time Memory
1035542 2024-07-26T11:47:57 Z aymanrs Radio Towers (IOI22_towers) C++17
37 / 100
 4000 ms 22020 KB 
#include "towers.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> pr, h;
const int K = 17;
vector<pair<int, int>> sp[K];
vector<int> spm[K];
inline int msb(int x){
    return 31-__builtin_clz(x);
}
int que(int l, int r){
  int d = msb(r-l+1);
  return max(sp[d][l], sp[d][r-(1<<d)+1]).second;
}
int qum(int l, int r){
  int d = msb(r-l+1);
  return min(spm[d][l], spm[d][r-(1<<d)+1]);
}
void init(int N, std::vector<int> H) {
  h = H;
  pr.resize(N);
  pr[0]=0;
  for(int i = 0;i < K;i++) {
    sp[i].resize(N);
    spm[i].resize(N);
  }
  for(int i = 0;i < N;i++){
    sp[0][i] = {H[i], i};spm[0][i]=H[i];
  }
  for(int k = 1;k < K;k++){
    for(int i = 0;i+(1<<k)<=N;i++){
      sp[k][i] = max(sp[k-1][i], sp[k-1][i+(1<<k-1)]);
      spm[k][i] = min(spm[k-1][i], spm[k-1][i+(1<<k-1)]);
    }
  }
  for(int i = 1;i < N-1;i++){
    pr[i]=pr[i-1];
    if(H[i] < H[i-1] && H[i] < H[i+1]) pr[i]++;
  }
}
int de;
int ans(int l, int r, int atm){
  if(l==r){
    if(h[l]<=atm) return 1;
    return 0;
  }
  int m = que(l, r);
  if(l==m) return ans(l+1, r, atm);
  if(m==r) return ans(l, r-1, atm);
  return max(ans(l, m-1, h[m]-de)+ans(m+1, r, h[m]-de), (qum(l,r) <= atm ? 1 : 0));
}
int max_towers(int L, int R, int D) {
  de = D;
  if(L+1>=R) return 1;
  if(D==1) return pr[R-1]-pr[L]+(h[L] < h[L+1])+(h[R]<h[R-1]);
  return ans(L, R, INT_MAX);
}

Compilation message

towers.cpp: In function 'void init(int, std::vector<int>)':
towers.cpp:32:49: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   32 |       sp[k][i] = max(sp[k-1][i], sp[k-1][i+(1<<k-1)]);
      |                                                ~^~
towers.cpp:33:52: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   33 |       spm[k][i] = min(spm[k-1][i], spm[k-1][i+(1<<k-1)]);
      |                                                   ~^~

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 3667 ms 13144 KB Output is correct
2 Execution timed out 4053 ms 21848 KB Time limit exceeded
3 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 1 ms 856 KB Output is correct
3 Correct 1 ms 856 KB Output is correct
4 Correct 1 ms 856 KB Output is correct
5 Correct 1 ms 856 KB Output is correct
6 Correct 1 ms 856 KB Output is correct
7 Correct 1 ms 856 KB Output is correct
8 Correct 1 ms 856 KB Output is correct
9 Correct 1 ms 856 KB Output is correct
10 Correct 1 ms 856 KB Output is correct
11 Correct 1 ms 856 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 856 KB Output is correct
14 Correct 1 ms 856 KB Output is correct
15 Correct 1 ms 856 KB Output is correct
16 Correct 1 ms 856 KB Output is correct
17 Correct 1 ms 856 KB Output is correct
18 Correct 1 ms 856 KB Output is correct
19 Correct 1 ms 856 KB Output is correct
20 Correct 1 ms 852 KB Output is correct
21 Correct 1 ms 856 KB Output is correct
22 Correct 1 ms 856 KB Output is correct
23 Correct 1 ms 856 KB Output is correct
24 Correct 1 ms 856 KB Output is correct
25 Correct 1 ms 600 KB Output is correct
26 Correct 1 ms 856 KB Output is correct
27 Correct 1 ms 856 KB Output is correct
28 Correct 1 ms 856 KB Output is correct
29 Correct 1 ms 856 KB Output is correct
30 Correct 1 ms 856 KB Output is correct
31 Correct 1 ms 856 KB Output is correct
32 Correct 1 ms 856 KB Output is correct
33 Correct 1 ms 856 KB Output is correct
34 Correct 1 ms 856 KB Output is correct
35 Correct 1 ms 856 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 1 ms 856 KB Output is correct
3 Correct 1 ms 856 KB Output is correct
4 Correct 1 ms 856 KB Output is correct
5 Correct 1 ms 856 KB Output is correct
6 Correct 1 ms 856 KB Output is correct
7 Correct 1 ms 856 KB Output is correct
8 Correct 1 ms 856 KB Output is correct
9 Correct 1 ms 856 KB Output is correct
10 Correct 1 ms 856 KB Output is correct
11 Correct 1 ms 856 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 856 KB Output is correct
14 Correct 1 ms 856 KB Output is correct
15 Correct 1 ms 856 KB Output is correct
16 Correct 1 ms 856 KB Output is correct
17 Correct 1 ms 856 KB Output is correct
18 Correct 1 ms 856 KB Output is correct
19 Correct 1 ms 856 KB Output is correct
20 Correct 1 ms 852 KB Output is correct
21 Correct 1 ms 856 KB Output is correct
22 Correct 1 ms 856 KB Output is correct
23 Correct 1 ms 856 KB Output is correct
24 Correct 1 ms 856 KB Output is correct
25 Correct 1 ms 600 KB Output is correct
26 Correct 1 ms 856 KB Output is correct
27 Correct 1 ms 856 KB Output is correct
28 Correct 1 ms 856 KB Output is correct
29 Correct 1 ms 856 KB Output is correct
30 Correct 1 ms 856 KB Output is correct
31 Correct 1 ms 856 KB Output is correct
32 Correct 1 ms 856 KB Output is correct
33 Correct 1 ms 856 KB Output is correct
34 Correct 1 ms 856 KB Output is correct
35 Correct 1 ms 856 KB Output is correct
36 Correct 23 ms 14512 KB Output is correct
37 Correct 27 ms 21848 KB Output is correct
38 Correct 22 ms 21848 KB Output is correct
39 Correct 21 ms 21848 KB Output is correct
40 Correct 30 ms 21912 KB Output is correct
41 Correct 20 ms 21848 KB Output is correct
42 Correct 27 ms 21848 KB Output is correct
43 Correct 25 ms 21848 KB Output is correct
44 Correct 17 ms 21848 KB Output is correct
45 Correct 18 ms 21848 KB Output is correct
46 Correct 17 ms 21848 KB Output is correct
47 Correct 32 ms 21840 KB Output is correct
48 Correct 33 ms 21848 KB Output is correct
49 Correct 21 ms 21844 KB Output is correct
50 Correct 26 ms 21812 KB Output is correct
51 Correct 19 ms 21848 KB Output is correct
52 Correct 34 ms 21840 KB Output is correct
53 Correct 19 ms 21848 KB Output is correct
54 Correct 18 ms 21848 KB Output is correct
55 Correct 25 ms 21848 KB Output is correct
56 Correct 19 ms 21848 KB Output is correct
57 Correct 19 ms 21080 KB Output is correct
58 Correct 28 ms 21808 KB Output is correct
59 Correct 30 ms 21912 KB Output is correct
60 Correct 27 ms 21848 KB Output is correct
61 Correct 26 ms 21908 KB Output is correct
62 Correct 26 ms 22016 KB Output is correct
63 Correct 27 ms 21800 KB Output is correct
64 Correct 26 ms 21780 KB Output is correct
65 Correct 27 ms 21956 KB Output is correct
66 Correct 19 ms 21848 KB Output is correct
67 Correct 20 ms 22020 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 383 ms 21592 KB Output is correct
2 Correct 503 ms 21816 KB Output is correct
3 Correct 606 ms 21780 KB Output is correct
4 Correct 575 ms 21788 KB Output is correct
5 Correct 500 ms 21848 KB Output is correct
6 Correct 492 ms 21816 KB Output is correct
7 Correct 528 ms 21848 KB Output is correct
8 Correct 642 ms 21828 KB Output is correct
9 Correct 507 ms 22016 KB Output is correct
10 Correct 540 ms 21820 KB Output is correct
11 Correct 668 ms 21848 KB Output is correct
12 Correct 634 ms 21848 KB Output is correct
13 Correct 680 ms 21848 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 2 ms 856 KB Output is correct
16 Correct 2 ms 1112 KB Output is correct
17 Correct 20 ms 21820 KB Output is correct
18 Correct 20 ms 21848 KB Output is correct
19 Correct 33 ms 21848 KB Output is correct
20 Correct 24 ms 22012 KB Output is correct
21 Correct 25 ms 21920 KB Output is correct
22 Correct 20 ms 21848 KB Output is correct
23 Correct 19 ms 21848 KB Output is correct
24 Correct 26 ms 21840 KB Output is correct
25 Correct 19 ms 21848 KB Output is correct
26 Correct 23 ms 21848 KB Output is correct
27 Correct 2 ms 856 KB Output is correct
28 Correct 2 ms 856 KB Output is correct
29 Correct 1 ms 856 KB Output is correct
30 Correct 1 ms 856 KB Output is correct
31 Correct 1 ms 664 KB Output is correct
32 Correct 2 ms 856 KB Output is correct
33 Correct 1 ms 856 KB Output is correct
34 Correct 2 ms 856 KB Output is correct
35 Correct 1 ms 856 KB Output is correct
36 Correct 1 ms 856 KB Output is correct

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4046 ms 5464 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 1 ms 856 KB Output is correct
3 Correct 1 ms 856 KB Output is correct
4 Correct 1 ms 856 KB Output is correct
5 Correct 1 ms 856 KB Output is correct
6 Correct 1 ms 856 KB Output is correct
7 Correct 1 ms 856 KB Output is correct
8 Correct 1 ms 856 KB Output is correct
9 Correct 1 ms 856 KB Output is correct
10 Correct 1 ms 856 KB Output is correct
11 Correct 1 ms 856 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 856 KB Output is correct
14 Correct 1 ms 856 KB Output is correct
15 Correct 1 ms 856 KB Output is correct
16 Correct 1 ms 856 KB Output is correct
17 Correct 1 ms 856 KB Output is correct
18 Correct 1 ms 856 KB Output is correct
19 Correct 1 ms 856 KB Output is correct
20 Correct 1 ms 852 KB Output is correct
21 Correct 1 ms 856 KB Output is correct
22 Correct 1 ms 856 KB Output is correct
23 Correct 1 ms 856 KB Output is correct
24 Correct 1 ms 856 KB Output is correct
25 Correct 1 ms 600 KB Output is correct
26 Correct 1 ms 856 KB Output is correct
27 Correct 1 ms 856 KB Output is correct
28 Correct 1 ms 856 KB Output is correct
29 Correct 1 ms 856 KB Output is correct
30 Correct 1 ms 856 KB Output is correct
31 Correct 1 ms 856 KB Output is correct
32 Correct 1 ms 856 KB Output is correct
33 Correct 1 ms 856 KB Output is correct
34 Correct 1 ms 856 KB Output is correct
35 Correct 1 ms 856 KB Output is correct
36 Correct 23 ms 14512 KB Output is correct
37 Correct 27 ms 21848 KB Output is correct
38 Correct 22 ms 21848 KB Output is correct
39 Correct 21 ms 21848 KB Output is correct
40 Correct 30 ms 21912 KB Output is correct
41 Correct 20 ms 21848 KB Output is correct
42 Correct 27 ms 21848 KB Output is correct
43 Correct 25 ms 21848 KB Output is correct
44 Correct 17 ms 21848 KB Output is correct
45 Correct 18 ms 21848 KB Output is correct
46 Correct 17 ms 21848 KB Output is correct
47 Correct 32 ms 21840 KB Output is correct
48 Correct 33 ms 21848 KB Output is correct
49 Correct 21 ms 21844 KB Output is correct
50 Correct 26 ms 21812 KB Output is correct
51 Correct 19 ms 21848 KB Output is correct
52 Correct 34 ms 21840 KB Output is correct
53 Correct 19 ms 21848 KB Output is correct
54 Correct 18 ms 21848 KB Output is correct
55 Correct 25 ms 21848 KB Output is correct
56 Correct 19 ms 21848 KB Output is correct
57 Correct 19 ms 21080 KB Output is correct
58 Correct 28 ms 21808 KB Output is correct
59 Correct 30 ms 21912 KB Output is correct
60 Correct 27 ms 21848 KB Output is correct
61 Correct 26 ms 21908 KB Output is correct
62 Correct 26 ms 22016 KB Output is correct
63 Correct 27 ms 21800 KB Output is correct
64 Correct 26 ms 21780 KB Output is correct
65 Correct 27 ms 21956 KB Output is correct
66 Correct 19 ms 21848 KB Output is correct
67 Correct 20 ms 22020 KB Output is correct
68 Correct 383 ms 21592 KB Output is correct
69 Correct 503 ms 21816 KB Output is correct
70 Correct 606 ms 21780 KB Output is correct
71 Correct 575 ms 21788 KB Output is correct
72 Correct 500 ms 21848 KB Output is correct
73 Correct 492 ms 21816 KB Output is correct
74 Correct 528 ms 21848 KB Output is correct
75 Correct 642 ms 21828 KB Output is correct
76 Correct 507 ms 22016 KB Output is correct
77 Correct 540 ms 21820 KB Output is correct
78 Correct 668 ms 21848 KB Output is correct
79 Correct 634 ms 21848 KB Output is correct
80 Correct 680 ms 21848 KB Output is correct
81 Correct 1 ms 344 KB Output is correct
82 Correct 2 ms 856 KB Output is correct
83 Correct 2 ms 1112 KB Output is correct
84 Correct 20 ms 21820 KB Output is correct
85 Correct 20 ms 21848 KB Output is correct
86 Correct 33 ms 21848 KB Output is correct
87 Correct 24 ms 22012 KB Output is correct
88 Correct 25 ms 21920 KB Output is correct
89 Correct 20 ms 21848 KB Output is correct
90 Correct 19 ms 21848 KB Output is correct
91 Correct 26 ms 21840 KB Output is correct
92 Correct 19 ms 21848 KB Output is correct
93 Correct 23 ms 21848 KB Output is correct
94 Correct 2 ms 856 KB Output is correct
95 Correct 2 ms 856 KB Output is correct
96 Correct 1 ms 856 KB Output is correct
97 Correct 1 ms 856 KB Output is correct
98 Correct 1 ms 664 KB Output is correct
99 Correct 2 ms 856 KB Output is correct
100 Correct 1 ms 856 KB Output is correct
101 Correct 2 ms 856 KB Output is correct
102 Correct 1 ms 856 KB Output is correct
103 Correct 1 ms 856 KB Output is correct
104 Execution timed out 4018 ms 19544 KB Time limit exceeded
105 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 3667 ms 13144 KB Output is correct
2 Execution timed out 4053 ms 21848 KB Time limit exceeded
3 Halted 0 ms 0 KB -