oj.uz

Submission #1094406

# Submission time Handle Problem Language Result Execution time Memory
1094406 2024-09-29T14:58:04 Z epicci23 Sprinklers (CEOI24_sprinklers) C++17
26 / 100
 88 ms 4020 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)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 8 ms 1500 KB Correct
3 Correct 0 ms 348 KB Correct
4 Correct 8 ms 1500 KB Correct
5 Correct 10 ms 1608 KB Correct
6 Correct 0 ms 348 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 344 KB Correct
2 Correct 10 ms 1500 KB Correct
3 Correct 5 ms 844 KB Correct
4 Correct 59 ms 4020 KB Correct
5 Correct 59 ms 4004 KB Correct
6 Correct 0 ms 348 KB Correct
7 Correct 0 ms 348 KB Correct
8 Correct 67 ms 4008 KB Correct
9 Correct 65 ms 4008 KB Correct
10 Correct 88 ms 3944 KB Correct
11 Correct 13 ms 1500 KB Correct
12 Correct 32 ms 2308 KB Correct
13 Correct 66 ms 3772 KB Correct
14 Correct 66 ms 3784 KB Correct
15 Correct 28 ms 2776 KB Correct
16 Correct 70 ms 3732 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 0 ms 344 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 0 ms 348 KB Correct
10 Correct 1 ms 348 KB Correct
11 Correct 0 ms 348 KB Correct
12 Correct 0 ms 344 KB Correct
13 Correct 1 ms 348 KB Correct
14 Correct 0 ms 348 KB Correct
15 Correct 1 ms 348 KB Correct
16 Correct 0 ms 348 KB Correct
17 Correct 0 ms 348 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 344 KB Correct
2 Correct 15 ms 1492 KB Correct
3 Correct 51 ms 2676 KB Correct
4 Correct 45 ms 2776 KB Correct
5 Correct 46 ms 2772 KB Correct
6 Correct 52 ms 2632 KB Correct
7 Correct 81 ms 3992 KB Correct
8 Correct 51 ms 2772 KB Correct
9 Correct 50 ms 2772 KB Correct
10 Correct 86 ms 3988 KB Correct
11 Correct 47 ms 2772 KB Correct
12 Correct 0 ms 348 KB Correct
13 Correct 0 ms 348 KB Correct
14 Correct 13 ms 1500 KB Correct
15 Correct 17 ms 1500 KB Correct
16 Correct 13 ms 1500 KB Correct
17 Correct 14 ms 2776 KB Correct
18 Correct 15 ms 2776 KB Correct
19 Correct 17 ms 2776 KB Correct
20 Correct 33 ms 2776 KB Correct
21 Correct 34 ms 2772 KB Correct
22 Correct 27 ms 2632 KB Correct
23 Incorrect 25 ms 2772 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 8 ms 1500 KB Correct
4 Correct 0 ms 348 KB Correct
5 Correct 8 ms 1500 KB Correct
6 Correct 10 ms 1608 KB Correct
7 Correct 0 ms 348 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 10 ms 1500 KB Correct
12 Correct 5 ms 844 KB Correct
13 Correct 59 ms 4020 KB Correct
14 Correct 59 ms 4004 KB Correct
15 Correct 0 ms 348 KB Correct
16 Correct 0 ms 348 KB Correct
17 Correct 67 ms 4008 KB Correct
18 Correct 65 ms 4008 KB Correct
19 Correct 88 ms 3944 KB Correct
20 Correct 13 ms 1500 KB Correct
21 Correct 32 ms 2308 KB Correct
22 Correct 66 ms 3772 KB Correct
23 Correct 66 ms 3784 KB Correct
24 Correct 28 ms 2776 KB Correct
25 Correct 70 ms 3732 KB Correct
26 Correct 0 ms 344 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 0 ms 348 KB Correct
33 Correct 1 ms 348 KB Correct
34 Correct 0 ms 348 KB Correct
35 Correct 0 ms 344 KB Correct
36 Correct 1 ms 348 KB Correct
37 Correct 0 ms 348 KB Correct
38 Correct 1 ms 348 KB Correct
39 Correct 0 ms 348 KB Correct
40 Correct 0 ms 348 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 15 ms 1492 KB Correct
45 Correct 51 ms 2676 KB Correct
46 Correct 45 ms 2776 KB Correct
47 Correct 46 ms 2772 KB Correct
48 Correct 52 ms 2632 KB Correct
49 Correct 81 ms 3992 KB Correct
50 Correct 51 ms 2772 KB Correct
51 Correct 50 ms 2772 KB Correct
52 Correct 86 ms 3988 KB Correct
53 Correct 47 ms 2772 KB Correct
54 Correct 0 ms 348 KB Correct
55 Correct 0 ms 348 KB Correct
56 Correct 13 ms 1500 KB Correct
57 Correct 17 ms 1500 KB Correct
58 Correct 13 ms 1500 KB Correct
59 Correct 14 ms 2776 KB Correct
60 Correct 15 ms 2776 KB Correct
61 Correct 17 ms 2776 KB Correct
62 Correct 33 ms 2776 KB Correct
63 Correct 34 ms 2772 KB Correct
64 Correct 27 ms 2632 KB Correct
65 Incorrect 25 ms 2772 KB User solution is worse than jury's solution
66 Halted 0 ms 0 KB -