oj.uz

Submission #1094400

# Submission time Handle Problem Language Result Execution time Memory
1094400 2024-09-29T14:53:58 Z epicci23 Sprinklers (CEOI24_sprinklers) C++17
26 / 100
 56 ms 5832 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 = upper_bound(all(b),r)-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 344 KB Correct
2 Correct 1 ms 348 KB Correct

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Correct
2 Correct 8 ms 1500 KB Correct
3 Correct 0 ms 348 KB Correct
4 Correct 7 ms 1500 KB Correct
5 Correct 10 ms 1500 KB Correct
6 Correct 0 ms 344 KB Correct
7 Correct 0 ms 344 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 9 ms 1504 KB Correct
3 Correct 2 ms 776 KB Correct
4 Correct 29 ms 3788 KB Correct
5 Correct 30 ms 3792 KB Correct
6 Correct 0 ms 348 KB Correct
7 Correct 1 ms 348 KB Correct
8 Correct 33 ms 3968 KB Correct
9 Correct 34 ms 3960 KB Correct
10 Correct 56 ms 3996 KB Correct
11 Correct 12 ms 1500 KB Correct
12 Correct 14 ms 2264 KB Correct
13 Correct 35 ms 3712 KB Correct
14 Correct 32 ms 3712 KB Correct
15 Correct 25 ms 2776 KB Correct
16 Correct 36 ms 3720 KB Correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Correct
2 Correct 1 ms 348 KB Correct
3 Correct 0 ms 348 KB Correct
4 Correct 0 ms 348 KB Correct
5 Correct 1 ms 468 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 0 ms 348 KB Correct
11 Correct 0 ms 348 KB Correct
12 Correct 0 ms 348 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 0 ms 348 KB Correct
18 Correct 0 ms 348 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 16 ms 1492 KB Correct
3 Correct 45 ms 4324 KB Correct
4 Correct 43 ms 4564 KB Correct
5 Correct 49 ms 4568 KB Correct
6 Correct 45 ms 4564 KB Correct
7 Correct 48 ms 5832 KB Correct
8 Correct 49 ms 4368 KB Correct
9 Correct 48 ms 4564 KB Correct
10 Correct 56 ms 5696 KB Correct
11 Correct 47 ms 4564 KB Correct
12 Correct 0 ms 348 KB Correct
13 Correct 0 ms 348 KB Correct
14 Correct 13 ms 2476 KB Correct
15 Correct 14 ms 2508 KB Correct
16 Correct 14 ms 2520 KB Correct
17 Correct 13 ms 3288 KB Correct
18 Correct 22 ms 3544 KB Correct
19 Correct 17 ms 3544 KB Correct
20 Correct 32 ms 4308 KB Correct
21 Correct 35 ms 4312 KB Correct
22 Correct 24 ms 4056 KB Correct
23 Incorrect 26 ms 4080 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 1 ms 348 KB Correct
3 Correct 8 ms 1500 KB Correct
4 Correct 0 ms 348 KB Correct
5 Correct 7 ms 1500 KB Correct
6 Correct 10 ms 1500 KB Correct
7 Correct 0 ms 344 KB Correct
8 Correct 0 ms 344 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 2 ms 776 KB Correct
13 Correct 29 ms 3788 KB Correct
14 Correct 30 ms 3792 KB Correct
15 Correct 0 ms 348 KB Correct
16 Correct 1 ms 348 KB Correct
17 Correct 33 ms 3968 KB Correct
18 Correct 34 ms 3960 KB Correct
19 Correct 56 ms 3996 KB Correct
20 Correct 12 ms 1500 KB Correct
21 Correct 14 ms 2264 KB Correct
22 Correct 35 ms 3712 KB Correct
23 Correct 32 ms 3712 KB Correct
24 Correct 25 ms 2776 KB Correct
25 Correct 36 ms 3720 KB Correct
26 Correct 0 ms 348 KB Correct
27 Correct 0 ms 348 KB Correct
28 Correct 1 ms 468 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 0 ms 348 KB Correct
34 Correct 0 ms 348 KB Correct
35 Correct 0 ms 348 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 0 ms 348 KB Correct
41 Correct 0 ms 348 KB Correct
42 Correct 0 ms 348 KB Correct
43 Correct 0 ms 348 KB Correct
44 Correct 16 ms 1492 KB Correct
45 Correct 45 ms 4324 KB Correct
46 Correct 43 ms 4564 KB Correct
47 Correct 49 ms 4568 KB Correct
48 Correct 45 ms 4564 KB Correct
49 Correct 48 ms 5832 KB Correct
50 Correct 49 ms 4368 KB Correct
51 Correct 48 ms 4564 KB Correct
52 Correct 56 ms 5696 KB Correct
53 Correct 47 ms 4564 KB Correct
54 Correct 0 ms 348 KB Correct
55 Correct 0 ms 348 KB Correct
56 Correct 13 ms 2476 KB Correct
57 Correct 14 ms 2508 KB Correct
58 Correct 14 ms 2520 KB Correct
59 Correct 13 ms 3288 KB Correct
60 Correct 22 ms 3544 KB Correct
61 Correct 17 ms 3544 KB Correct
62 Correct 32 ms 4308 KB Correct
63 Correct 35 ms 4312 KB Correct
64 Correct 24 ms 4056 KB Correct
65 Incorrect 26 ms 4080 KB User solution is worse than jury's solution
66 Halted 0 ms 0 KB -