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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. const long long MaxN = 1e5 + 5;
  4. long long n,k;
  5. long long a[MaxN];
  6. int main()
  7. {
  8.     ios_base::sync_with_stdio(0);
  9.     cin.tie(0);
  10.     if(fopen("ANTS.inp","r"))
  11.     {
  12.         freopen("ANTS.inp","r",stdin);
  13.         freopen("ANTS.out","w",stdout);
  14.     }
  15.     cin >> n >> k;
  16.     for (long long i=1; i<=n; i++)
  17.     {
  18.         cin >> a[i];
  19.     }
  20.     long long ans = 0;
  21.     for (long long i=1; i<=n; i++)
  22.     {
  23.         if(a[i]<0)
  24.         {
  25.             ans=max(ans,abs(a[i]));
  26.         }
  27.         else
  28.         {
  29.             ans=max(ans,k-a[i]);
  30.         }
  31.     }
  32.     cout << ans;
  33. }
  34.  
Success #stdin #stdout 0.01s 5304KB
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https://ideone.com/gtTwRJ
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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