text: # FLOORS - Editorial
  
  Tester: Harris Leung
  Editorialist: hrishik85
  
  717
  
  None
  
  # PROBLEM:
  
  Chef and Chefina are in a hotel where each of the 10 floors has 10 rooms. Chef’s room is X and Chefina’s room is Y. We have the output the difference in floors between Chef and Chefina
  
  # EXPLANATION:
  
  Note that the rooms are numbered sequentially from 1 to 10 on the 1st floor, 11 to 20 on the 2nd floor and so on.
  
  Hint 1
  
  Given the room numbers X and Y, we need to be able to identify their floor numbers. What does the room number sequence from [10 * (i - 1) + 1] to [10 * i] tell us?
  
  Hint 2
  
  How do we identify the floors that Chef and Chefina are staying on?
  
  Hint 2a
  
  Given any room number - we know that it lies between [10 * (i - 1) + 1] to [10 * i] for some i. We now need to find what that ‘i’ is - that will give us the floor number.
  
  Hint 2b
  
  If we divide the room number by 10, what will that give us? A number between [(i - 1) + 1/10] and [ i ].
  
  Hint 2c
  
  If we round up the above division to the nearest integer, [ (i - 1) + 1/10] will round up to [(i - 1) + 1] = [ i ].
  
  Hence we will get the floor number. Note that this is true for any of the rooms in that floor. For eg. take the 6th room - [10 * (i-1) + 6]. When you divide it by 10, we get [ (i-1) + 6/10 ], and rounding this up, we get [ (i-1) + 1 ] = [ i ] again.
  
  Hint 3
  
  What do we do after finding their floors?
  
  Hint 3a
  
  Now we just need to calculate the floor numbers for both Chef and Chefina and subtract them. However, is that sufficient or are we missing something?
  
  Hint 3b
  
  If we just output (Chef’s floor - Chefina’’s floor), we are making a mistake. What is the mistake?
  
  Hint 3c
  
  We don’t know whether Chef is on a higher floor or Chefina
  
  Hint 3d
  
  Consider the case when Chef is in room 45, and Chefina is in room 65. We would be outputting -2. But the answer should actually be 2. So we should take the absolute difference between their floors.
  
  Hint 4
  
  Full Solution:
  
  Hint 4a
  
  Chef’s floor number is math.ceil [X/10] and Chefina’s floor number is math.ceil [Y/10]
  
  Hint 4b
  
  We need to output the absolute value of the difference in their floors - i.e. abs (math.ceil [X/10] - math.ceil [Y/10])
  
  # TIME COMPLEXITY:
  
  Time complexity is O(1).
  
  # SOLUTION:
  
  Tester's Solution
  ``````#include<bits/stdc++.h>
  using namespace std;
  typedef long long ll;
  #define fi first
  #define se second
  const ll mod=998244353;
  const int N=2e5+5;
  int n;
  ll a[N];
  int main(){
  ios::sync_with_stdio(false);cin.tie(0);
  int t;cin >> t;
  while(t--){
  int a,b;cin >> a >> b;
  int c=abs((a-1)/10-(b-1)/10);
  cout << c << '\n';
  }
  }
  ``````
  Editorialist's Solution
  ``````t=int(input())
  for _ in range(t):
  X,Y = map(int,input().split())
  X = ((X-1)//10)
  Y = ((Y-1)//10)
  print(abs(X-Y))
  ``````
  
  #include <bits/stdc++.h>
  
  using namespace std;
  
  void solve(){
  
  ``````int x, y;
  cin>>x>>y;
  if (x%10 == 0 && y%10==0 || x%10 != 0 && y%10 !=0)
  {
  cout<<abs((x/10)-(y/10))<<endl;
  }
  else if (y%10 == 0)
  {
  cout<<abs((x/10)+1 - (y/10))<<endl;
  }
  else if (x%10 == 0)
  {
  cout<<abs((x/10) - (y/10)+1)<<endl;
  }
  ``````
  
  }
  
  int main()
  {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  
  ``````int t;
  cin>>t;
  while(t--){
  solve();
  
  }
  ``````
  
  return 0;
  }
  
  can anyone explain me why i got WA in this question.
  is there any test case that can give this a wrong answer?
distilabel_metadata.content: Evaluate the user given text extract and determine if it contains a math question and optionally and answer to this question.
  
  Output rules:
  
  1. Briefly describe the document and mention if it contains a question or a question and answer.
  2. Finalize the output with: Label: no-question,question,question-and-answer,multiple-question,multiple-question-and-answer
distilabel_metadata.role: system
distilabel_metadata.content: # FLOORS - Editorial
  
  Tester: Harris Leung
  Editorialist: hrishik85
  
  717
  
  None
  
  # PROBLEM:
  
  Chef and Chefina are in a hotel where each of the 10 floors has 10 rooms. Chef’s room is X and Chefina’s room is Y. We have the output the difference in floors between Chef and Chefina
  
  # EXPLANATION:
  
  Note that the rooms are numbered sequentially from 1 to 10 on the 1st floor, 11 to 20 on the 2nd floor and so on.
  
  Hint 1
  
  Given the room numbers X and Y, we need to be able to identify their floor numbers. What does the room number sequence from [10 * (i - 1) + 1] to [10 * i] tell us?
  
  Hint 2
  
  How do we identify the floors that Chef and Chefina are staying on?
  
  Hint 2a
  
  Given any room number - we know that it lies between [10 * (i - 1) + 1] to [10 * i] for some i. We now need to find what that ‘i’ is - that will give us the floor number.
  
  Hint 2b
  
  If we divide the room number by 10, what will that give us? A number between [(i - 1) + 1/10] and [ i ].
  
  Hint 2c
  
  If we round up the above division to the nearest integer, [ (i - 1) + 1/10] will round up to [(i - 1) + 1] = [ i ].
  
  Hence we will get the floor number. Note that this is true for any of the rooms in that floor. For eg. take the 6th room - [10 * (i-1) + 6]. When you divide it by 10, we get [ (i-1) + 6/10 ], and rounding this up, we get [ (i-1) + 1 ] = [ i ] again.
  
  Hint 3
  
  What do we do after finding their floors?
  
  Hint 3a
  
  Now we just need to calculate the floor numbers for both Chef and Chefina and subtract them. However, is that sufficient or are we missing something?
  
  Hint 3b
  
  If we just output (Chef’s floor - Chefina’’s floor), we are making a mistake. What is the mistake?
  
  Hint 3c
  
  We don’t know whether Chef is on a higher floor or Chefina
  
  Hint 3d
  
  Consider the case when Chef is in room 45, and Chefina is in room 65. We would be outputting -2. But the answer should actually be 2. So we should take the absolute difference between their floors.
  
  Hint 4
  
  Full Solution:
  
  Hint 4a
  
  Chef’s floor number is math.ceil [X/10] and Chefina’s floor number is math.ceil [Y/10]
  
  Hint 4b
  
  We need to output the absolute value of the difference in their floors - i.e. abs (math.ceil [X/10] - math.ceil [Y/10])
  
  # TIME COMPLEXITY:
  
  Time complexity is O(1).
  
  # SOLUTION:
  
  Tester's Solution
  ``````#include<bits/stdc++.h>
  using namespace std;
  typedef long long ll;
  #define fi first
  #define se second
  const ll mod=998244353;
  const int N=2e5+5;
  int n;
  ll a[N];
  int main(){
  ios::sync_with_stdio(false);cin.tie(0);
  int t;cin >> t;
  while(t--){
  int a,b;cin >> a >> b;
  int c=abs((a-1)/10-(b-1)/10);
  cout << c << '\n';
  }
  }
  ``````
  Editorialist's Solution
  ``````t=int(input())
  for _ in range(t):
  X,Y = map(int,input().split())
  X = ((X-1)//10)
  Y = ((Y-1)//10)
  print(abs(X-Y))
  ``````
  
  #include <bits/stdc++.h>
  
  using namespace std;
  
  void solve(){
  
  ``````int x, y;
  cin>>x>>y;
  if (x%10 == 0 && y%10==0 || x%10 != 0 && y%10 !=0)
  {
  cout<<abs((x/10)-(y/10))<<endl;
  }
  else if (y%10 == 0)
  {
  cout<<abs((x/10)+1 - (y/10))<<endl;
  }
  else if (x%10 == 0)
  {
  cout<<abs((x/10) - (y/10)+1)<<endl;
  }
  ``````
  
  }
  
  int main()
  {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  
  ``````int t;
  cin>>t;
  while(t--){
  solve();
  
  }
  ``````
  
  return 0;
  }
  
  can anyone explain me why i got WA in this question.
  is there any test case that can give this a wrong answer?
distilabel_metadata.role: user
distilabel_metadata.raw_output_q_a_detector_0: The provided text is an editorial for a coding problem titled "FLOORS." The document describes a problem where Chef and Chefina are in a hotel with 10 floors, each containing 10 rooms. The task is to determine the difference in floors between their rooms, given their room numbers.
  
  The document includes:
  - A problem statement
  - An explanation with hints and a full solution
  - Time complexity
  - Solutions in C++ and Python
  - A user's solution with a request for help to understand why it is incorrect
  
  The user's solution is provided, and they are asking if there are any test cases that could cause their solution to give a wrong answer.
  
  ### Analysis of the User's Solution
  
  The user's solution is as follows:
  
  ```cpp
  #include <bits/stdc++.h>
  using namespace std;
  
  void solve(){
      int x, y;
      cin >> x >> y;
      if (x % 10 == 0 && y % 10 == 0 || x % 10 != 0 && y % 10 != 0) {
          cout << abs((x / 10) - (y / 10)) << endl;
      } else if (y % 10 ==