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  1. #include <bits/stdc++.h>
  2. #define VuDucNam ios_base::sync_with_stdio(false);
  3. #define Lop9a6 cin.tie(NULL);
  4. #define THCSPhamVanDong cout.tie(NULL);
  5. #define ll long long
  6. #define el cout << '\n'
  7. #define sz(a) (ll) a.size()
  8. #define all(a) a.begin(), a.end()
  9. #define fi first
  10. #define se second
  11. #define fill(a, x) memset(a, x, sizeof(a))
  12. #define file(name)                         \
  13.     if (fopen(name ".inp", "r"))           \
  14.     {                                      \
  15.         freopen(name ".inp", "r", stdin);  \
  16.         freopen(name ".out", "w", stdout); \
  17.     }
  18. #define TIME (1.0 * clock() / CLOCKS_PER_SEC)
  19. #define RUNTIME cerr << "\nRuntime: " << TIME << "s.\n"
  20.  
  21. using namespace std;
  22.  
  23. const int N6 = 1e6 + 5;
  24. const ll MOD = 1e9 + 7;
  25. const ll inf = LLONG_MAX;
  26.  
  27. int n,a[105];
  28.  
  29. void solve()
  30. {
  31.     cin >> n;
  32.     for (int i = 1; i <= n; i++)
  33.         cin >> a[i];
  34.     sort(a + 1, a + n + 1);
  35.     int G = a[2] - a[1];
  36.     for (int i = 3; i <= n; i++)
  37.         G = __gcd(G, a[i] - a[1]);
  38.     set<int> div;
  39.     for (int i = 1; i <= sqrt(G); i++)
  40.     {
  41.         if(G % i == 0)
  42.         {
  43.             if(i > 1) div.insert(i);
  44.             if(G / i > 1) div.insert(G / i);
  45.         }
  46.     }
  47.     if(div.empty()) cout << -1;
  48.     else for (auto u : div) cout << u << " ";
  49. }
  50.  
  51. int main()
  52. {
  53.     VuDucNam Lop9a6 THCSPhamVanDong
  54.     // file();
  55.     solve();
  56.     RUNTIME;
  57.     return 0;
  58. }
  59.  
Success #stdin #stdout #stderr 0.01s 5280KB
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stdin
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Standard input is empty
stdout
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-1
stderr
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Runtime: 0.005232s.
https://ideone.com/Cs4E3T
language:
C++ (gcc 8.3)
created:
20 hours ago
visibility:
public

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