oj.uz

Submission #1094405

# Submission time Handle Problem Language Result Execution time Memory
1094405 2024-09-29T14:57:46 Z epicci23 Sprinklers (CEOI24_sprinklers) C++17
26 / 100
 58 ms 4012 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;){

      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]<=max(a[f[1]],a[f[0]]+pow)) i++;
      }
      else{
          res[f[1]]='R';
          while(i<m && b[i]<=a[f.back()]+pow) i++;
      }
    }
    return {1,res};
  };


  int l=0,r=(int)1e10;
  while(l<r){
    int m=(l+r)/2;
    if(check(m).first) r=m;
    else l=m+1;
  }  
  if(r==(int)1e10) 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 348 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 7 ms 1496 KB Correct
3 Correct 0 ms 348 KB Correct
4 Correct 8 ms 1500 KB Correct
5 Correct 8 ms 1496 KB Correct
6 Correct 0 ms 344 KB Correct
7 Correct 0 ms 348 KB Correct
8 Correct 2 ms 736 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 348 KB Correct
2 Correct 9 ms 1504 KB Correct
3 Correct 3 ms 776 KB Correct
4 Correct 28 ms 3792 KB Correct
5 Correct 28 ms 3792 KB Correct
6 Correct 0 ms 348 KB Correct
7 Correct 0 ms 348 KB Correct
8 Correct 30 ms 3896 KB Correct
9 Correct 32 ms 3952 KB Correct
10 Correct 58 ms 4012 KB Correct
11 Correct 13 ms 1500 KB Correct
12 Correct 15 ms 2264 KB Correct
13 Correct 36 ms 3712 KB Correct
14 Correct 35 ms 3712 KB Correct
15 Correct 26 ms 2776 KB Correct
16 Correct 37 ms 3728 KB Correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Correct
2 Correct 0 ms 348 KB Correct
3 Correct 1 ms 348 KB Correct
4 Correct 0 ms 348 KB Correct
5 Correct 0 ms 348 KB Correct
6 Correct 0 ms 348 KB Correct
7 Correct 0 ms 348 KB Correct
8 Correct 0 ms 348 KB Correct
9 Correct 1 ms 348 KB Correct
10 Correct 0 ms 348 KB Correct
11 Correct 0 ms 348 KB Correct
12 Correct 0 ms 344 KB Correct
13 Correct 0 ms 348 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 1 ms 344 KB Correct
18 Correct 0 ms 344 KB Correct
19 Correct 0 ms 348 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 348 KB Correct
2 Correct 13 ms 1620 KB Correct
3 Correct 45 ms 2784 KB Correct
4 Correct 44 ms 2776 KB Correct
5 Correct 47 ms 2772 KB Correct
6 Correct 46 ms 2776 KB Correct
7 Correct 48 ms 3792 KB Correct
8 Correct 48 ms 2772 KB Correct
9 Correct 49 ms 2776 KB Correct
10 Correct 56 ms 3788 KB Correct
11 Correct 46 ms 2744 KB Correct
12 Correct 0 ms 344 KB Correct
13 Correct 0 ms 348 KB Correct
14 Correct 13 ms 1496 KB Correct
15 Correct 14 ms 1500 KB Correct
16 Correct 13 ms 1496 KB Correct
17 Correct 15 ms 2776 KB Correct
18 Correct 14 ms 2772 KB Correct
19 Correct 16 ms 2788 KB Correct
20 Correct 32 ms 2776 KB Correct
21 Correct 32 ms 2772 KB Correct
22 Correct 24 ms 2776 KB Correct
23 Incorrect 24 ms 2720 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 348 KB Correct
2 Correct 0 ms 348 KB Correct
3 Correct 7 ms 1496 KB Correct
4 Correct 0 ms 348 KB Correct
5 Correct 8 ms 1500 KB Correct
6 Correct 8 ms 1496 KB Correct
7 Correct 0 ms 344 KB Correct
8 Correct 0 ms 348 KB Correct
9 Correct 2 ms 736 KB Correct
10 Correct 0 ms 348 KB Correct
11 Correct 9 ms 1504 KB Correct
12 Correct 3 ms 776 KB Correct
13 Correct 28 ms 3792 KB Correct
14 Correct 28 ms 3792 KB Correct
15 Correct 0 ms 348 KB Correct
16 Correct 0 ms 348 KB Correct
17 Correct 30 ms 3896 KB Correct
18 Correct 32 ms 3952 KB Correct
19 Correct 58 ms 4012 KB Correct
20 Correct 13 ms 1500 KB Correct
21 Correct 15 ms 2264 KB Correct
22 Correct 36 ms 3712 KB Correct
23 Correct 35 ms 3712 KB Correct
24 Correct 26 ms 2776 KB Correct
25 Correct 37 ms 3728 KB Correct
26 Correct 1 ms 348 KB Correct
27 Correct 0 ms 348 KB Correct
28 Correct 0 ms 348 KB Correct
29 Correct 0 ms 348 KB Correct
30 Correct 0 ms 348 KB Correct
31 Correct 0 ms 348 KB Correct
32 Correct 1 ms 348 KB Correct
33 Correct 0 ms 348 KB Correct
34 Correct 0 ms 348 KB Correct
35 Correct 0 ms 344 KB Correct
36 Correct 0 ms 348 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 1 ms 344 KB Correct
41 Correct 0 ms 344 KB Correct
42 Correct 0 ms 348 KB Correct
43 Correct 0 ms 348 KB Correct
44 Correct 13 ms 1620 KB Correct
45 Correct 45 ms 2784 KB Correct
46 Correct 44 ms 2776 KB Correct
47 Correct 47 ms 2772 KB Correct
48 Correct 46 ms 2776 KB Correct
49 Correct 48 ms 3792 KB Correct
50 Correct 48 ms 2772 KB Correct
51 Correct 49 ms 2776 KB Correct
52 Correct 56 ms 3788 KB Correct
53 Correct 46 ms 2744 KB Correct
54 Correct 0 ms 344 KB Correct
55 Correct 0 ms 348 KB Correct
56 Correct 13 ms 1496 KB Correct
57 Correct 14 ms 1500 KB Correct
58 Correct 13 ms 1496 KB Correct
59 Correct 15 ms 2776 KB Correct
60 Correct 14 ms 2772 KB Correct
61 Correct 16 ms 2788 KB Correct
62 Correct 32 ms 2776 KB Correct
63 Correct 32 ms 2772 KB Correct
64 Correct 24 ms 2776 KB Correct
65 Incorrect 24 ms 2720 KB User solution is worse than jury's solution
66 Halted 0 ms 0 KB -