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  1. #include <iostream>
  2. using namespace std;
  3. void inp_mas (int m[])
  4. {
  5.     int N;
  6.     N=0;
  7.     while(cin>>m[N])
  8.      N++;
  9. }
  10. void bubble(int m[], int N)
  11. {
  12.     for(int i=0;i<N+1; i++)
  13.         for(int j=0; j<N; j++)
  14.             if(m[j]>m[j+1])
  15.                 swap(m[j],m[j+1]);
  16. }
  17.  
  18. bool checker(int m[], int N)
  19. {
  20.     int diff;
  21.     diff=m[1]-m[0];
  22.     for(int i=0;i<N;i++)
  23.     {
  24.         if((m[i+1]-m[i])!=diff)
  25.             return false;
  26.     }
  27.     return true;
  28. }
  29. int m[100000];
  30. int main()
  31. {
  32.     int N;
  33.     inp_mas(m);
  34.     bubble(m,N);
  35.     if(checker(m,N)) 
  36.      cout<<"YES";
  37.     else cout<<"NO";
  38.     return 0;
  39. }
Success #stdin #stdout 0.01s 5420KB
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stdout
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YES
https://ideone.com/8jSJFD
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
public

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