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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main()
  5. {
  6.   int n, k;
  7.   cin >> n >> k;
  8.   vector<int> a(n);
  9.   for (auto &i : a)
  10.     cin >> i;
  11.   vector<int> b = a;
  12.   sort(b.begin(), b.end());
  13.   for (int i = 0; i < n; i++)
  14.   {
  15.     if ((a[i] % k) != (b[i] % k))
  16.     {
  17.       cout << "NO\n";
  18.       return 0;
  19.     }
  20.   }
  21.   cout << "YES\n";
  22.   return 0;
  23. }
Success #stdin #stdout 0.01s 5316KB
comments (?)
stdin
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5 7
14 19 13 7 12
stdout
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YES
https://ideone.com/ulpWfp
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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