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Submission #1114476

# Submission time Handle Problem Language Result Execution time Memory
1114476 2024-11-19T01:20:39 Z dynam1c Sprinklers (CEOI24_sprinklers) C++17
26 / 100
 94 ms 2616 KB 
#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, m;
  cin >> n >> m;
  vector<int> s(n), f(m);
  for (int& e : s)
    cin >> e;
  for (int& e : f)
    cin >> e;

  vector<char> d(n);
  auto check = [&](int k) {
    d.assign(n, 0);
    int x = -1;
    int j = 0, pj = 0;
    for (int i = 0; i < n; i++) {
      if (s[i] <= x)
        x = s[i]+k, d[i] = 'R';
      else if (j < m && f[j] < s[i]) {
        if (s[i]-f[j] > k)
          return false;
        x = s[i], d[i] = 'L';
        if (i > 0 && d[i-1] == 'L' && s[i]-k <= f[pj]) {
          x = s[i-1]+k;
          d[i-1] = 'R';
        } else
          pj = j;
      } else
        x = s[i]+k, d[i] = 'R';
      while (j < m && f[j] <= x)
        j++;
    }
    return j == m;
  };

  if (!check(1e9)) {
    cout << -1 << endl;
    return 0;
  }

  int l = -1, r = 1e9;
  while (r-l > 1) {
    int m = (l+r)/2;
    if (check(m))
      r = m;
    else
      l = m;
  }

  check(r);

  for (int i = 0; i < n; i++)
    if (d[i] == 'L')
      s[i] -= r;
  sort(s.begin(), s.end());
  int j = 0;
  for (int e : s) {
    if (j == m)
      break;
    assert(e <= f[j]);
    while (j < m && f[j] <= e+r)
      j++;
  }
  //assert(j == m);

  cout << r << endl;
  for (char c : d)
    cout << c;
  cout << endl;
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Correct
2 Correct 1 ms 336 KB Correct

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Correct
2 Correct 21 ms 592 KB Correct
3 Correct 1 ms 336 KB Correct
4 Correct 35 ms 592 KB Correct
5 Correct 24 ms 592 KB Correct
6 Correct 1 ms 336 KB Correct
7 Correct 1 ms 504 KB Correct
8 Correct 8 ms 336 KB Correct
9 Correct 1 ms 336 KB Correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Correct
2 Correct 27 ms 760 KB Correct
3 Correct 6 ms 336 KB Correct
4 Correct 67 ms 1208 KB Correct
5 Correct 73 ms 1208 KB Correct
6 Correct 1 ms 336 KB Correct
7 Correct 1 ms 336 KB Correct
8 Correct 66 ms 1352 KB Correct
9 Correct 59 ms 1352 KB Correct
10 Correct 64 ms 1208 KB Correct
11 Correct 36 ms 848 KB Correct
12 Correct 40 ms 848 KB Correct
13 Correct 47 ms 1104 KB Correct
14 Correct 57 ms 1104 KB Correct
15 Correct 59 ms 1100 KB Correct
16 Correct 43 ms 1096 KB Correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Correct
2 Correct 1 ms 336 KB Correct
3 Correct 1 ms 336 KB Correct
4 Correct 1 ms 336 KB Correct
5 Correct 1 ms 336 KB Correct
6 Correct 1 ms 336 KB Correct
7 Correct 1 ms 336 KB Correct
8 Correct 1 ms 336 KB Correct
9 Correct 1 ms 336 KB Correct
10 Correct 1 ms 336 KB Correct
11 Correct 1 ms 336 KB Correct
12 Correct 1 ms 336 KB Correct
13 Correct 1 ms 336 KB Correct
14 Correct 1 ms 336 KB Correct
15 Correct 1 ms 508 KB Correct
16 Correct 1 ms 336 KB Correct
17 Correct 1 ms 336 KB Correct
18 Correct 1 ms 336 KB Correct
19 Correct 1 ms 336 KB Correct
20 Correct 1 ms 336 KB Correct

Subtask #4
0.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Correct
2 Correct 31 ms 868 KB Correct
3 Correct 83 ms 1352 KB Correct
4 Correct 86 ms 1352 KB Correct
5 Correct 83 ms 1360 KB Correct
6 Correct 94 ms 1208 KB Correct
7 Correct 87 ms 1216 KB Correct
8 Correct 81 ms 1360 KB Correct
9 Correct 88 ms 1352 KB Correct
10 Correct 81 ms 1356 KB Correct
11 Correct 86 ms 1352 KB Correct
12 Correct 1 ms 336 KB Correct
13 Correct 1 ms 336 KB Correct
14 Correct 45 ms 916 KB Correct
15 Correct 37 ms 840 KB Correct
16 Correct 36 ms 1016 KB Correct
17 Correct 33 ms 1352 KB Correct
18 Correct 41 ms 1352 KB Correct
19 Correct 47 ms 1308 KB Correct
20 Correct 71 ms 1352 KB Correct
21 Correct 70 ms 1352 KB Correct
22 Correct 68 ms 2616 KB Correct
23 Incorrect 76 ms 2596 KB User solution is worse than jury's solution
24 Halted 0 ms 0 KB -

Subtask #5
0.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Correct
2 Correct 1 ms 336 KB Correct
3 Correct 21 ms 592 KB Correct
4 Correct 1 ms 336 KB Correct
5 Correct 35 ms 592 KB Correct
6 Correct 24 ms 592 KB Correct
7 Correct 1 ms 336 KB Correct
8 Correct 1 ms 504 KB Correct
9 Correct 8 ms 336 KB Correct
10 Correct 1 ms 336 KB Correct
11 Correct 27 ms 760 KB Correct
12 Correct 6 ms 336 KB Correct
13 Correct 67 ms 1208 KB Correct
14 Correct 73 ms 1208 KB Correct
15 Correct 1 ms 336 KB Correct
16 Correct 1 ms 336 KB Correct
17 Correct 66 ms 1352 KB Correct
18 Correct 59 ms 1352 KB Correct
19 Correct 64 ms 1208 KB Correct
20 Correct 36 ms 848 KB Correct
21 Correct 40 ms 848 KB Correct
22 Correct 47 ms 1104 KB Correct
23 Correct 57 ms 1104 KB Correct
24 Correct 59 ms 1100 KB Correct
25 Correct 43 ms 1096 KB Correct
26 Correct 1 ms 336 KB Correct
27 Correct 1 ms 336 KB Correct
28 Correct 1 ms 336 KB Correct
29 Correct 1 ms 336 KB Correct
30 Correct 1 ms 336 KB Correct
31 Correct 1 ms 336 KB Correct
32 Correct 1 ms 336 KB Correct
33 Correct 1 ms 336 KB Correct
34 Correct 1 ms 336 KB Correct
35 Correct 1 ms 336 KB Correct
36 Correct 1 ms 336 KB Correct
37 Correct 1 ms 336 KB Correct
38 Correct 1 ms 508 KB Correct
39 Correct 1 ms 336 KB Correct
40 Correct 1 ms 336 KB Correct
41 Correct 1 ms 336 KB Correct
42 Correct 1 ms 336 KB Correct
43 Correct 1 ms 336 KB Correct
44 Correct 31 ms 868 KB Correct
45 Correct 83 ms 1352 KB Correct
46 Correct 86 ms 1352 KB Correct
47 Correct 83 ms 1360 KB Correct
48 Correct 94 ms 1208 KB Correct
49 Correct 87 ms 1216 KB Correct
50 Correct 81 ms 1360 KB Correct
51 Correct 88 ms 1352 KB Correct
52 Correct 81 ms 1356 KB Correct
53 Correct 86 ms 1352 KB Correct
54 Correct 1 ms 336 KB Correct
55 Correct 1 ms 336 KB Correct
56 Correct 45 ms 916 KB Correct
57 Correct 37 ms 840 KB Correct
58 Correct 36 ms 1016 KB Correct
59 Correct 33 ms 1352 KB Correct
60 Correct 41 ms 1352 KB Correct
61 Correct 47 ms 1308 KB Correct
62 Correct 71 ms 1352 KB Correct
63 Correct 70 ms 1352 KB Correct
64 Correct 68 ms 2616 KB Correct
65 Incorrect 76 ms 2596 KB User solution is worse than jury's solution
66 Halted 0 ms 0 KB -