oj.uz

Submission #1094414

# Submission time Handle Problem Language Result Execution time Memory
1094414 2024-09-29T15:05:28 Z epicci23 Sprinklers (CEOI24_sprinklers) C++17
26 / 100
 91 ms 6016 KB 
#include "bits/stdc++.h"
#define int long long
#define all(v) v.begin() , v.end()
#define sz(a) (int)a.size()
using namespace std;


int n,m;
vector<int> a,b;

void _(){
  cin >> n >> m;
  for(int i=0;i<n;i++){
  	int x; cin >> x;
  	a.push_back(x);
  }
  for(int i=0;i<m;i++){
  	int x;cin >> x;
  	b.push_back(x);
  }

  auto get = [&](int l,int r){
    if(l>r) return -1LL;
    int it = lower_bound(all(b),r+1)-b.begin();
    int it2 = lower_bound(all(b),l)-b.begin();
    return it-it2;
  };

  auto check = [&](int pow)->pair<bool,vector<char>>{

    int p=0;
    vector<char> res(n,'L');

    for(int i=0;i<m;){
      if(p==n) return {0,res};
      int lol=-1;
      while(p<n && a[p]<=b[i]){
        res[p]='R';
        lol=max(lol,a[p]+pow);
        p++;
      }

      if(lol>=b[i]){
       while(i<m && lol>=b[i]) i++;
       continue;
      }

      if(i==m) return {1,res};
      if(p==n) return {0,res};
      
      vector<int> f; 
      while(p<n && a[p]-pow<=b[i]) f.push_back(p++);

      if(sz(f)==0) return {0,res};

      if(sz(f)==1){
        while(i<m && b[i]<=a[f[0]]) i++;
        continue;
      }

      if(sz(f)>=3){
        for(int j=0;j<sz(f);j++){
          if(j==sz(f)-2) continue;
          res[f[j]]='R';
        }
        while(i<m && b[i]<=a[f.back()]+pow) i++;
        if(i==m) return {1,res};
        continue;
      }

      if(get(a[f[0]]+1,a[f[1]]-1)>0){
          res[f[0]]='R';
          while(i<m && b[i]<=a[f[0]]+pow) i++;
      }
      else{
          res[f[1]]='R';
          while(i<m && b[i]<=a[f[1]]+pow) i++;
      }
    }
    return {1,res};
  };


  int l=0,r=(int)1e18;
  while(l<r){
    int m=(l+r)/2;
    if(check(m).first) r=m;
    else l=m+1;
  }  
  if(r==(int)1e18) cout << -1 << '\n';
  else{
    auto X = check(l);
    cout << l << '\n';
    for(char x:X.second) cout << x;
    cout << '\n';
  }
}

int32_t main(){
  cin.tie(0); ios::sync_with_stdio(0);
  int tc=1;//cin >> tc;
  while(tc--) _();
  return 0;
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Correct
2 Correct 0 ms 348 KB Correct

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Correct
2 Correct 10 ms 2268 KB Correct
3 Correct 0 ms 348 KB Correct
4 Correct 9 ms 2268 KB Correct
5 Correct 9 ms 2268 KB Correct
6 Correct 1 ms 452 KB Correct
7 Correct 0 ms 348 KB Correct
8 Correct 2 ms 856 KB Correct
9 Correct 0 ms 348 KB Correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Correct
2 Correct 12 ms 2384 KB Correct
3 Correct 6 ms 988 KB Correct
4 Correct 59 ms 5868 KB Correct
5 Correct 60 ms 5868 KB Correct
6 Correct 0 ms 600 KB Correct
7 Correct 0 ms 344 KB Correct
8 Correct 61 ms 6016 KB Correct
9 Correct 59 ms 5968 KB Correct
10 Correct 91 ms 5980 KB Correct
11 Correct 12 ms 2516 KB Correct
12 Correct 30 ms 3540 KB Correct
13 Correct 74 ms 4856 KB Correct
14 Correct 87 ms 5028 KB Correct
15 Correct 29 ms 4056 KB Correct
16 Correct 66 ms 4720 KB Correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Correct
2 Correct 0 ms 348 KB Correct
3 Correct 1 ms 344 KB Correct
4 Correct 0 ms 344 KB Correct
5 Correct 0 ms 348 KB Correct
6 Correct 0 ms 348 KB Correct
7 Correct 1 ms 348 KB Correct
8 Correct 0 ms 348 KB Correct
9 Correct 1 ms 348 KB Correct
10 Correct 1 ms 468 KB Correct
11 Correct 0 ms 348 KB Correct
12 Correct 0 ms 348 KB Correct
13 Correct 0 ms 600 KB Correct
14 Correct 0 ms 348 KB Correct
15 Correct 0 ms 348 KB Correct
16 Correct 0 ms 348 KB Correct
17 Correct 0 ms 348 KB Correct
18 Correct 0 ms 348 KB Correct
19 Correct 1 ms 600 KB Correct
20 Correct 0 ms 348 KB Correct

Subtask #4
0.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Correct
2 Correct 16 ms 2516 KB Correct
3 Correct 52 ms 4568 KB Correct
4 Correct 49 ms 4568 KB Correct
5 Correct 47 ms 4568 KB Correct
6 Correct 54 ms 4568 KB Correct
7 Correct 88 ms 5924 KB Correct
8 Correct 54 ms 4568 KB Correct
9 Correct 56 ms 4568 KB Correct
10 Correct 85 ms 5940 KB Correct
11 Correct 52 ms 4564 KB Correct
12 Correct 0 ms 348 KB Correct
13 Correct 0 ms 348 KB Correct
14 Correct 13 ms 2524 KB Correct
15 Correct 14 ms 2320 KB Correct
16 Correct 14 ms 2520 KB Correct
17 Correct 18 ms 3228 KB Correct
18 Correct 23 ms 3540 KB Correct
19 Correct 19 ms 3540 KB Correct
20 Correct 36 ms 4308 KB Correct
21 Correct 38 ms 4308 KB Correct
22 Correct 28 ms 4052 KB Correct
23 Incorrect 29 ms 4052 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 0 ms 344 KB Correct
2 Correct 0 ms 348 KB Correct
3 Correct 10 ms 2268 KB Correct
4 Correct 0 ms 348 KB Correct
5 Correct 9 ms 2268 KB Correct
6 Correct 9 ms 2268 KB Correct
7 Correct 1 ms 452 KB Correct
8 Correct 0 ms 348 KB Correct
9 Correct 2 ms 856 KB Correct
10 Correct 0 ms 348 KB Correct
11 Correct 12 ms 2384 KB Correct
12 Correct 6 ms 988 KB Correct
13 Correct 59 ms 5868 KB Correct
14 Correct 60 ms 5868 KB Correct
15 Correct 0 ms 600 KB Correct
16 Correct 0 ms 344 KB Correct
17 Correct 61 ms 6016 KB Correct
18 Correct 59 ms 5968 KB Correct
19 Correct 91 ms 5980 KB Correct
20 Correct 12 ms 2516 KB Correct
21 Correct 30 ms 3540 KB Correct
22 Correct 74 ms 4856 KB Correct
23 Correct 87 ms 5028 KB Correct
24 Correct 29 ms 4056 KB Correct
25 Correct 66 ms 4720 KB Correct
26 Correct 1 ms 344 KB Correct
27 Correct 0 ms 344 KB Correct
28 Correct 0 ms 348 KB Correct
29 Correct 0 ms 348 KB Correct
30 Correct 1 ms 348 KB Correct
31 Correct 0 ms 348 KB Correct
32 Correct 1 ms 348 KB Correct
33 Correct 1 ms 468 KB Correct
34 Correct 0 ms 348 KB Correct
35 Correct 0 ms 348 KB Correct
36 Correct 0 ms 600 KB Correct
37 Correct 0 ms 348 KB Correct
38 Correct 0 ms 348 KB Correct
39 Correct 0 ms 348 KB Correct
40 Correct 0 ms 348 KB Correct
41 Correct 0 ms 348 KB Correct
42 Correct 1 ms 600 KB Correct
43 Correct 0 ms 348 KB Correct
44 Correct 16 ms 2516 KB Correct
45 Correct 52 ms 4568 KB Correct
46 Correct 49 ms 4568 KB Correct
47 Correct 47 ms 4568 KB Correct
48 Correct 54 ms 4568 KB Correct
49 Correct 88 ms 5924 KB Correct
50 Correct 54 ms 4568 KB Correct
51 Correct 56 ms 4568 KB Correct
52 Correct 85 ms 5940 KB Correct
53 Correct 52 ms 4564 KB Correct
54 Correct 0 ms 348 KB Correct
55 Correct 0 ms 348 KB Correct
56 Correct 13 ms 2524 KB Correct
57 Correct 14 ms 2320 KB Correct
58 Correct 14 ms 2520 KB Correct
59 Correct 18 ms 3228 KB Correct
60 Correct 23 ms 3540 KB Correct
61 Correct 19 ms 3540 KB Correct
62 Correct 36 ms 4308 KB Correct
63 Correct 38 ms 4308 KB Correct
64 Correct 28 ms 4052 KB Correct
65 Incorrect 29 ms 4052 KB User solution is worse than jury's solution
66 Halted 0 ms 0 KB -