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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 ll MOD = 1e9 + 7;
  24. const ll inf = LLONG_MAX;
  25.  
  26. int p,s;
  27. bool dem[11]={false};
  28.  
  29. bool check(int n)
  30. {
  31.     while (n != 0)
  32.     {
  33.         if (dem[n % 10])
  34.             return false;
  35.         n /= 10;
  36.     }
  37.     return true;
  38. }
  39.  
  40. void solve()
  41. {
  42.     cin >> p >> s;
  43.  
  44.     while (s != 0)
  45.     {
  46.         dem[s % 10] = true;
  47.         s /= 10;
  48.     }
  49.  
  50.     for (int i = p; i >= 1; --i)
  51.     {
  52.         if (check(i))
  53.         {
  54.             cout << i << endl;
  55.             return;
  56.         }
  57.     }
  58. }
  59.  
  60. int main()
  61. {
  62.     VuDucNam Lop9a6 THCSPhamVanDong
  63.     // file();
  64.     solve();
  65.     RUNTIME;
  66.     return 0;
  67. }
  68.  
Success #stdin #stdout #stderr 0s 5288KB
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Standard input is empty
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Standard output is empty
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Runtime: 0.004421s.
https://ideone.com/oV1RJl
language:
C++ (gcc 8.3)
created:
9 hours ago
visibility:
public

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