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Submission #1023780

# Submission time Handle Problem Language Result Execution time Memory
1023780 2024-07-15T06:29:34 Z vjudge1 Osumnjičeni (COCI21_osumnjiceni) C++17
110 / 110
 523 ms 33212 KB 
#include<bits/stdc++.h>

using namespace std;

const int N = 200'000 + 50, K = 20;
int n, q, l[N], r[N], par[N][K];
set<pair<int, int> > st;

bool check(int l, int r)
{
  if(st.empty()) return true;

  auto it = st.upper_bound({r, 0});
  if(it != st.end() && it->second <= r) return false;
  if(it != st.begin())
    {
      it--;
      if(l <= it->first) return false;
    }
  return true;
}

int main()
{
  cin >> n;
  for(int i = 0; i < n; i ++)
    cin >> l[i] >> r[i];

  int j = 0;
  for(int i = 0; i < n; i ++)
    {
      while(j < n && check(l[j], r[j]))
	st.insert({r[j], l[j]}), j++;
      par[i][0] = j;
      st.erase({r[i], l[i]});
    }

  for(int i = K - 1; i >= 0; i --) par[n][i] = n;
  
  for(int i = n - 1; i >= 0; i --)
    for(int l = 1; l < K; l++)
      par[i][l] = par[par[i][l - 1]][l -1];
		     
  // cerr << par[0][0] << endl;
  cin >> q;
  while(q--)
    {
      int a, b;
      cin >> a >> b;
      a--;
      int ans = 0;
      for(int i = K - 1; i >= 0; i --)
	if(par[a][i] < b) ans += (1 << i), a = par[a][i];
      cout << ans + 1 << endl;
    }
  return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 119 ms 21072 KB Output is correct
2 Correct 118 ms 21232 KB Output is correct
3 Correct 120 ms 21076 KB Output is correct
4 Correct 114 ms 21076 KB Output is correct
5 Correct 121 ms 21428 KB Output is correct
6 Correct 121 ms 20900 KB Output is correct
7 Correct 110 ms 21060 KB Output is correct
8 Correct 145 ms 20964 KB Output is correct
9 Correct 118 ms 21168 KB Output is correct
10 Correct 118 ms 20820 KB Output is correct
11 Correct 227 ms 29844 KB Output is correct
12 Correct 212 ms 29012 KB Output is correct
13 Correct 210 ms 29012 KB Output is correct
14 Correct 223 ms 25940 KB Output is correct
15 Correct 194 ms 24600 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 107 ms 21256 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 4852 KB Output is correct
2 Correct 10 ms 4700 KB Output is correct
3 Correct 10 ms 4700 KB Output is correct
4 Correct 10 ms 4700 KB Output is correct
5 Correct 10 ms 4700 KB Output is correct
6 Correct 10 ms 4876 KB Output is correct
7 Correct 10 ms 4700 KB Output is correct
8 Correct 10 ms 4700 KB Output is correct
9 Correct 11 ms 4700 KB Output is correct
10 Correct 11 ms 4700 KB Output is correct
11 Correct 10 ms 4956 KB Output is correct
12 Correct 10 ms 4956 KB Output is correct
13 Correct 10 ms 5044 KB Output is correct
14 Correct 11 ms 4700 KB Output is correct
15 Correct 10 ms 4700 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 10 ms 4868 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 4852 KB Output is correct
2 Correct 10 ms 4700 KB Output is correct
3 Correct 10 ms 4700 KB Output is correct
4 Correct 10 ms 4700 KB Output is correct
5 Correct 10 ms 4700 KB Output is correct
6 Correct 10 ms 4876 KB Output is correct
7 Correct 10 ms 4700 KB Output is correct
8 Correct 10 ms 4700 KB Output is correct
9 Correct 11 ms 4700 KB Output is correct
10 Correct 11 ms 4700 KB Output is correct
11 Correct 10 ms 4956 KB Output is correct
12 Correct 10 ms 4956 KB Output is correct
13 Correct 10 ms 5044 KB Output is correct
14 Correct 11 ms 4700 KB Output is correct
15 Correct 10 ms 4700 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 10 ms 4868 KB Output is correct
18 Correct 287 ms 7508 KB Output is correct
19 Correct 272 ms 7252 KB Output is correct
20 Correct 294 ms 7536 KB Output is correct
21 Correct 267 ms 7252 KB Output is correct
22 Correct 279 ms 7252 KB Output is correct
23 Correct 267 ms 7252 KB Output is correct
24 Correct 278 ms 7400 KB Output is correct
25 Correct 280 ms 7252 KB Output is correct
26 Correct 267 ms 7256 KB Output is correct
27 Correct 250 ms 7204 KB Output is correct
28 Correct 252 ms 6868 KB Output is correct
29 Correct 260 ms 7040 KB Output is correct
30 Correct 260 ms 7128 KB Output is correct
31 Correct 261 ms 6996 KB Output is correct
32 Correct 239 ms 6996 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 269 ms 7012 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 125 ms 21332 KB Output is correct
2 Correct 117 ms 21332 KB Output is correct
3 Correct 116 ms 21076 KB Output is correct
4 Correct 108 ms 20820 KB Output is correct
5 Correct 112 ms 21024 KB Output is correct
6 Correct 101 ms 21076 KB Output is correct
7 Correct 107 ms 20916 KB Output is correct
8 Correct 113 ms 20820 KB Output is correct
9 Correct 110 ms 20964 KB Output is correct
10 Correct 128 ms 21312 KB Output is correct
11 Correct 204 ms 29028 KB Output is correct
12 Correct 223 ms 30292 KB Output is correct
13 Correct 201 ms 28884 KB Output is correct
14 Correct 208 ms 24916 KB Output is correct
15 Correct 233 ms 25940 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 106 ms 21120 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 119 ms 21072 KB Output is correct
2 Correct 118 ms 21232 KB Output is correct
3 Correct 120 ms 21076 KB Output is correct
4 Correct 114 ms 21076 KB Output is correct
5 Correct 121 ms 21428 KB Output is correct
6 Correct 121 ms 20900 KB Output is correct
7 Correct 110 ms 21060 KB Output is correct
8 Correct 145 ms 20964 KB Output is correct
9 Correct 118 ms 21168 KB Output is correct
10 Correct 118 ms 20820 KB Output is correct
11 Correct 227 ms 29844 KB Output is correct
12 Correct 212 ms 29012 KB Output is correct
13 Correct 210 ms 29012 KB Output is correct
14 Correct 223 ms 25940 KB Output is correct
15 Correct 194 ms 24600 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 107 ms 21256 KB Output is correct
18 Correct 11 ms 4852 KB Output is correct
19 Correct 10 ms 4700 KB Output is correct
20 Correct 10 ms 4700 KB Output is correct
21 Correct 10 ms 4700 KB Output is correct
22 Correct 10 ms 4700 KB Output is correct
23 Correct 10 ms 4876 KB Output is correct
24 Correct 10 ms 4700 KB Output is correct
25 Correct 10 ms 4700 KB Output is correct
26 Correct 11 ms 4700 KB Output is correct
27 Correct 11 ms 4700 KB Output is correct
28 Correct 10 ms 4956 KB Output is correct
29 Correct 10 ms 4956 KB Output is correct
30 Correct 10 ms 5044 KB Output is correct
31 Correct 11 ms 4700 KB Output is correct
32 Correct 10 ms 4700 KB Output is correct
33 Correct 0 ms 2396 KB Output is correct
34 Correct 10 ms 4868 KB Output is correct
35 Correct 287 ms 7508 KB Output is correct
36 Correct 272 ms 7252 KB Output is correct
37 Correct 294 ms 7536 KB Output is correct
38 Correct 267 ms 7252 KB Output is correct
39 Correct 279 ms 7252 KB Output is correct
40 Correct 267 ms 7252 KB Output is correct
41 Correct 278 ms 7400 KB Output is correct
42 Correct 280 ms 7252 KB Output is correct
43 Correct 267 ms 7256 KB Output is correct
44 Correct 250 ms 7204 KB Output is correct
45 Correct 252 ms 6868 KB Output is correct
46 Correct 260 ms 7040 KB Output is correct
47 Correct 260 ms 7128 KB Output is correct
48 Correct 261 ms 6996 KB Output is correct
49 Correct 239 ms 6996 KB Output is correct
50 Correct 1 ms 2396 KB Output is correct
51 Correct 269 ms 7012 KB Output is correct
52 Correct 125 ms 21332 KB Output is correct
53 Correct 117 ms 21332 KB Output is correct
54 Correct 116 ms 21076 KB Output is correct
55 Correct 108 ms 20820 KB Output is correct
56 Correct 112 ms 21024 KB Output is correct
57 Correct 101 ms 21076 KB Output is correct
58 Correct 107 ms 20916 KB Output is correct
59 Correct 113 ms 20820 KB Output is correct
60 Correct 110 ms 20964 KB Output is correct
61 Correct 128 ms 21312 KB Output is correct
62 Correct 204 ms 29028 KB Output is correct
63 Correct 223 ms 30292 KB Output is correct
64 Correct 201 ms 28884 KB Output is correct
65 Correct 208 ms 24916 KB Output is correct
66 Correct 233 ms 25940 KB Output is correct
67 Correct 0 ms 2396 KB Output is correct
68 Correct 106 ms 21120 KB Output is correct
69 Correct 467 ms 24508 KB Output is correct
70 Correct 460 ms 24688 KB Output is correct
71 Correct 523 ms 24300 KB Output is correct
72 Correct 488 ms 24612 KB Output is correct
73 Correct 416 ms 24660 KB Output is correct
74 Correct 437 ms 24916 KB Output is correct
75 Correct 412 ms 24608 KB Output is correct
76 Correct 429 ms 24920 KB Output is correct
77 Correct 422 ms 24404 KB Output is correct
78 Correct 423 ms 24660 KB Output is correct
79 Correct 500 ms 33212 KB Output is correct
80 Correct 505 ms 31696 KB Output is correct
81 Correct 499 ms 31832 KB Output is correct
82 Correct 481 ms 27732 KB Output is correct
83 Correct 483 ms 27220 KB Output is correct
84 Correct 1 ms 2396 KB Output is correct
85 Correct 385 ms 24580 KB Output is correct