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Submission #894255

# Submission time Handle Problem Language Result Execution time Memory
894255 2023-12-28T03:08:04 Z box A Difficult(y) Choice (BOI21_books) C++17
100 / 100
 2 ms 1376 KB 
#include "bits/stdc++.h"
using namespace std;
 
#include "books.h"
 
void solve(int n, int k, long long A, int s) {
  vector<long long> a(n, -1);
 
  auto qry = [&](int i) {
    if (~a[i]) return a[i];
    return a[i] = skim(i + 1);
  };
  int low = k, hi = n;
  while (low < hi) {
    int mid = (low + hi) / 2;
    if (qry(mid) >= A)
      hi = mid;
    else
      low = mid + 1;
  }
  if (low < n) {
    __int128 sum = qry(low);
    for (int i = 0; i < k - 1; i++) sum += qry(i);
    if (sum >= A && sum <= A * 2) {
      vector<int> inds(k);
      iota(inds.begin(), inds.end(), 1);
      inds.back() = low + 1;
      answer(inds);
      return;
    }
  }
  vector<int> pos;
  low--;
  for (int i = 0; i < k; i++) {
    pos.push_back(i);
    if (low - i >= 0) pos.push_back(low - i);
  }
  sort(pos.begin(), pos.end());
  pos.erase(unique(pos.begin(), pos.end()), pos.end());
  for (int i = 0; i < (int)pos.size() - k + 1; i++) {
    __int128 sum = 0;
    for (int j = i; j < i + k; j++) sum += qry(pos[j]);
    if (sum >= A && sum <= A * 2) {
      vector<int> inds(k);
      for (int u = 0; u < k; u++) inds[u] = pos[i + u] + 1;
      answer(inds);
      return;
    }
  }
  impossible();
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 600 KB Output is correct
10 Correct 0 ms 600 KB Output is correct
11 Correct 0 ms 600 KB Output is correct
12 Correct 0 ms 600 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 1 ms 600 KB Output is correct
16 Correct 1 ms 600 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1368 KB Output is correct
2 Correct 1 ms 1112 KB Output is correct
3 Correct 1 ms 1112 KB Output is correct
4 Correct 1 ms 1112 KB Output is correct
5 Correct 1 ms 1196 KB Output is correct
6 Correct 1 ms 1112 KB Output is correct
7 Correct 1 ms 1196 KB Output is correct
8 Correct 1 ms 1112 KB Output is correct
9 Correct 1 ms 1192 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1368 KB Output is correct
2 Correct 1 ms 1112 KB Output is correct
3 Correct 1 ms 1112 KB Output is correct
4 Correct 1 ms 1112 KB Output is correct
5 Correct 1 ms 1196 KB Output is correct
6 Correct 1 ms 1112 KB Output is correct
7 Correct 1 ms 1196 KB Output is correct
8 Correct 1 ms 1112 KB Output is correct
9 Correct 1 ms 1192 KB Output is correct
10 Correct 1 ms 1112 KB Output is correct
11 Correct 1 ms 1112 KB Output is correct
12 Correct 1 ms 1272 KB Output is correct
13 Correct 1 ms 1112 KB Output is correct
14 Correct 1 ms 1112 KB Output is correct
15 Correct 1 ms 1196 KB Output is correct
16 Correct 1 ms 1112 KB Output is correct
17 Correct 1 ms 1112 KB Output is correct
18 Correct 1 ms 1112 KB Output is correct
19 Correct 1 ms 1112 KB Output is correct
20 Correct 1 ms 1112 KB Output is correct
21 Correct 1 ms 1112 KB Output is correct
22 Correct 1 ms 1112 KB Output is correct
23 Correct 1 ms 1368 KB Output is correct
24 Correct 1 ms 1196 KB Output is correct
25 Correct 1 ms 1112 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1368 KB Output is correct
2 Correct 1 ms 1112 KB Output is correct
3 Correct 1 ms 1112 KB Output is correct
4 Correct 1 ms 1112 KB Output is correct
5 Correct 1 ms 1196 KB Output is correct
6 Correct 1 ms 1112 KB Output is correct
7 Correct 1 ms 1196 KB Output is correct
8 Correct 1 ms 1112 KB Output is correct
9 Correct 1 ms 1192 KB Output is correct
10 Correct 1 ms 1112 KB Output is correct
11 Correct 1 ms 1112 KB Output is correct
12 Correct 1 ms 1272 KB Output is correct
13 Correct 1 ms 1112 KB Output is correct
14 Correct 1 ms 1112 KB Output is correct
15 Correct 1 ms 1196 KB Output is correct
16 Correct 1 ms 1112 KB Output is correct
17 Correct 1 ms 1112 KB Output is correct
18 Correct 1 ms 1112 KB Output is correct
19 Correct 1 ms 1112 KB Output is correct
20 Correct 1 ms 1112 KB Output is correct
21 Correct 1 ms 1112 KB Output is correct
22 Correct 1 ms 1112 KB Output is correct
23 Correct 1 ms 1368 KB Output is correct
24 Correct 1 ms 1196 KB Output is correct
25 Correct 1 ms 1112 KB Output is correct
26 Correct 1 ms 1112 KB Output is correct
27 Correct 1 ms 1108 KB Output is correct
28 Correct 1 ms 1168 KB Output is correct
29 Correct 1 ms 1112 KB Output is correct
30 Correct 1 ms 1112 KB Output is correct
31 Correct 1 ms 1368 KB Output is correct
32 Correct 1 ms 1112 KB Output is correct
33 Correct 1 ms 1200 KB Output is correct
34 Correct 1 ms 1112 KB Output is correct
35 Correct 1 ms 1112 KB Output is correct
36 Correct 1 ms 1112 KB Output is correct
37 Correct 1 ms 1200 KB Output is correct
38 Correct 1 ms 1112 KB Output is correct
39 Correct 1 ms 1112 KB Output is correct
40 Correct 1 ms 1364 KB Output is correct
41 Correct 1 ms 1112 KB Output is correct
42 Correct 1 ms 1368 KB Output is correct
43 Correct 1 ms 1112 KB Output is correct
44 Correct 1 ms 1112 KB Output is correct
45 Correct 1 ms 1108 KB Output is correct
46 Correct 1 ms 1196 KB Output is correct
47 Correct 1 ms 1112 KB Output is correct
48 Correct 1 ms 1112 KB Output is correct
49 Correct 1 ms 1368 KB Output is correct
50 Correct 1 ms 1112 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1368 KB Output is correct
2 Correct 1 ms 1112 KB Output is correct
3 Correct 1 ms 1112 KB Output is correct
4 Correct 1 ms 1112 KB Output is correct
5 Correct 1 ms 1196 KB Output is correct
6 Correct 1 ms 1112 KB Output is correct
7 Correct 1 ms 1196 KB Output is correct
8 Correct 1 ms 1112 KB Output is correct
9 Correct 1 ms 1192 KB Output is correct
10 Correct 1 ms 1112 KB Output is correct
11 Correct 1 ms 1112 KB Output is correct
12 Correct 1 ms 1272 KB Output is correct
13 Correct 1 ms 1112 KB Output is correct
14 Correct 1 ms 1112 KB Output is correct
15 Correct 1 ms 1196 KB Output is correct
16 Correct 1 ms 1112 KB Output is correct
17 Correct 1 ms 1112 KB Output is correct
18 Correct 1 ms 1112 KB Output is correct
19 Correct 1 ms 1112 KB Output is correct
20 Correct 1 ms 1112 KB Output is correct
21 Correct 1 ms 1112 KB Output is correct
22 Correct 1 ms 1112 KB Output is correct
23 Correct 1 ms 1368 KB Output is correct
24 Correct 1 ms 1196 KB Output is correct
25 Correct 1 ms 1112 KB Output is correct
26 Correct 1 ms 1112 KB Output is correct
27 Correct 1 ms 1112 KB Output is correct
28 Correct 1 ms 1368 KB Output is correct
29 Correct 1 ms 1112 KB Output is correct
30 Correct 1 ms 1196 KB Output is correct
31 Correct 1 ms 1112 KB Output is correct
32 Correct 1 ms 1368 KB Output is correct
33 Correct 1 ms 1112 KB Output is correct
34 Correct 1 ms 1368 KB Output is correct
35 Correct 1 ms 1112 KB Output is correct
36 Correct 1 ms 1368 KB Output is correct
37 Correct 1 ms 1112 KB Output is correct
38 Correct 1 ms 1112 KB Output is correct
39 Correct 1 ms 1112 KB Output is correct
40 Correct 1 ms 1112 KB Output is correct
41 Correct 1 ms 1368 KB Output is correct
42 Correct 2 ms 1116 KB Output is correct
43 Correct 1 ms 1112 KB Output is correct
44 Correct 1 ms 1112 KB Output is correct
45 Correct 1 ms 1112 KB Output is correct
46 Correct 1 ms 1192 KB Output is correct
47 Correct 1 ms 1108 KB Output is correct
48 Correct 1 ms 1112 KB Output is correct
49 Correct 1 ms 1112 KB Output is correct
50 Correct 1 ms 1112 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1368 KB Output is correct
2 Correct 1 ms 1112 KB Output is correct
3 Correct 1 ms 1112 KB Output is correct
4 Correct 1 ms 1112 KB Output is correct
5 Correct 1 ms 1196 KB Output is correct
6 Correct 1 ms 1112 KB Output is correct
7 Correct 1 ms 1196 KB Output is correct
8 Correct 1 ms 1112 KB Output is correct
9 Correct 1 ms 1192 KB Output is correct
10 Correct 1 ms 1112 KB Output is correct
11 Correct 1 ms 1112 KB Output is correct
12 Correct 1 ms 1272 KB Output is correct
13 Correct 1 ms 1112 KB Output is correct
14 Correct 1 ms 1112 KB Output is correct
15 Correct 1 ms 1196 KB Output is correct
16 Correct 1 ms 1112 KB Output is correct
17 Correct 1 ms 1112 KB Output is correct
18 Correct 1 ms 1112 KB Output is correct
19 Correct 1 ms 1112 KB Output is correct
20 Correct 1 ms 1112 KB Output is correct
21 Correct 1 ms 1112 KB Output is correct
22 Correct 1 ms 1112 KB Output is correct
23 Correct 1 ms 1368 KB Output is correct
24 Correct 1 ms 1196 KB Output is correct
25 Correct 1 ms 1112 KB Output is correct
26 Correct 1 ms 1112 KB Output is correct
27 Correct 1 ms 1108 KB Output is correct
28 Correct 1 ms 1168 KB Output is correct
29 Correct 1 ms 1112 KB Output is correct
30 Correct 1 ms 1112 KB Output is correct
31 Correct 1 ms 1368 KB Output is correct
32 Correct 1 ms 1112 KB Output is correct
33 Correct 1 ms 1200 KB Output is correct
34 Correct 1 ms 1112 KB Output is correct
35 Correct 1 ms 1112 KB Output is correct
36 Correct 1 ms 1112 KB Output is correct
37 Correct 1 ms 1200 KB Output is correct
38 Correct 1 ms 1112 KB Output is correct
39 Correct 1 ms 1112 KB Output is correct
40 Correct 1 ms 1364 KB Output is correct
41 Correct 1 ms 1112 KB Output is correct
42 Correct 1 ms 1368 KB Output is correct
43 Correct 1 ms 1112 KB Output is correct
44 Correct 1 ms 1112 KB Output is correct
45 Correct 1 ms 1108 KB Output is correct
46 Correct 1 ms 1196 KB Output is correct
47 Correct 1 ms 1112 KB Output is correct
48 Correct 1 ms 1112 KB Output is correct
49 Correct 1 ms 1368 KB Output is correct
50 Correct 1 ms 1112 KB Output is correct
51 Correct 1 ms 1112 KB Output is correct
52 Correct 1 ms 1112 KB Output is correct
53 Correct 1 ms 1368 KB Output is correct
54 Correct 1 ms 1112 KB Output is correct
55 Correct 1 ms 1196 KB Output is correct
56 Correct 1 ms 1112 KB Output is correct
57 Correct 1 ms 1368 KB Output is correct
58 Correct 1 ms 1112 KB Output is correct
59 Correct 1 ms 1368 KB Output is correct
60 Correct 1 ms 1112 KB Output is correct
61 Correct 1 ms 1368 KB Output is correct
62 Correct 1 ms 1112 KB Output is correct
63 Correct 1 ms 1112 KB Output is correct
64 Correct 1 ms 1112 KB Output is correct
65 Correct 1 ms 1112 KB Output is correct
66 Correct 1 ms 1368 KB Output is correct
67 Correct 2 ms 1116 KB Output is correct
68 Correct 1 ms 1112 KB Output is correct
69 Correct 1 ms 1112 KB Output is correct
70 Correct 1 ms 1112 KB Output is correct
71 Correct 1 ms 1192 KB Output is correct
72 Correct 1 ms 1108 KB Output is correct
73 Correct 1 ms 1112 KB Output is correct
74 Correct 1 ms 1112 KB Output is correct
75 Correct 1 ms 1112 KB Output is correct
76 Correct 1 ms 344 KB Output is correct
77 Correct 1 ms 344 KB Output is correct
78 Correct 1 ms 344 KB Output is correct
79 Correct 1 ms 344 KB Output is correct
80 Correct 1 ms 344 KB Output is correct
81 Correct 0 ms 420 KB Output is correct
82 Correct 1 ms 344 KB Output is correct
83 Correct 0 ms 344 KB Output is correct
84 Correct 1 ms 600 KB Output is correct
85 Correct 1 ms 600 KB Output is correct
86 Correct 1 ms 600 KB Output is correct
87 Correct 1 ms 600 KB Output is correct
88 Correct 1 ms 600 KB Output is correct
89 Correct 0 ms 600 KB Output is correct
90 Correct 1 ms 600 KB Output is correct
91 Correct 1 ms 600 KB Output is correct
92 Correct 1 ms 1196 KB Output is correct
93 Correct 1 ms 1192 KB Output is correct
94 Correct 1 ms 1196 KB Output is correct
95 Correct 1 ms 1112 KB Output is correct
96 Correct 1 ms 1192 KB Output is correct
97 Correct 1 ms 1112 KB Output is correct
98 Correct 1 ms 1192 KB Output is correct
99 Correct 1 ms 1196 KB Output is correct
100 Correct 1 ms 1196 KB Output is correct
101 Correct 1 ms 1196 KB Output is correct
102 Correct 1 ms 1196 KB Output is correct
103 Correct 1 ms 1200 KB Output is correct
104 Correct 1 ms 1368 KB Output is correct
105 Correct 1 ms 1368 KB Output is correct
106 Correct 1 ms 1264 KB Output is correct
107 Correct 1 ms 1372 KB Output is correct
108 Correct 1 ms 1112 KB Output is correct
109 Correct 1 ms 1116 KB Output is correct
110 Correct 1 ms 1112 KB Output is correct
111 Correct 1 ms 1124 KB Output is correct
112 Correct 1 ms 1116 KB Output is correct
113 Correct 1 ms 1204 KB Output is correct
114 Correct 1 ms 1112 KB Output is correct
115 Correct 1 ms 1376 KB Output is correct
116 Correct 1 ms 1376 KB Output is correct
117 Correct 1 ms 1124 KB Output is correct
118 Correct 1 ms 1196 KB Output is correct
119 Correct 1 ms 1124 KB Output is correct
120 Correct 1 ms 1112 KB Output is correct
121 Correct 1 ms 1112 KB Output is correct
122 Correct 1 ms 1112 KB Output is correct
123 Correct 1 ms 1112 KB Output is correct
124 Correct 1 ms 1112 KB Output is correct
125 Correct 1 ms 1112 KB Output is correct
126 Correct 1 ms 1112 KB Output is correct
127 Correct 1 ms 1200 KB Output is correct
128 Correct 1 ms 1112 KB Output is correct
129 Correct 1 ms 1192 KB Output is correct
130 Correct 1 ms 1112 KB Output is correct
131 Correct 1 ms 1112 KB Output is correct
132 Correct 1 ms 1196 KB Output is correct
133 Correct 1 ms 1112 KB Output is correct
134 Correct 1 ms 1112 KB Output is correct
135 Correct 1 ms 1112 KB Output is correct