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Korotkodul

F_2bin

Dec 10th, 2022
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C++ 2.13 KB | None | 0 0
  1. #include <iostream>
  2. #include <cmath>
  3. #include <vector>
  4. #include <queue>
  5. #include <algorithm>
  6. #include <string>
  7. #include <stack>
  8. #include <set>
  9. #include <map>
  10. #define pii pair <int, int>
  11. #define pb(x) push_back(x)
  12. using namespace std;
  13. using ll = long long;
  14. using ld = long double;
  15. using db = double;
  16. void cv(vector <int> &v) {
  17.     for (auto x : v) cout << x << ' ';
  18.     cout << "\n";
  19. }
  20.  
  21. void cvl(vector <ll> &v) {
  22.     for (auto x : v) cout << x << ' ';
  23.     cout << "\n";
  24. }
  25.  
  26.  
  27. void cvv(vector <vector <int> > &v) {
  28.     for (auto x : v) cv(x);
  29.     cout << "\n";
  30. }
  31.  
  32. void cvb(vector <bool> v) {
  33.     for (bool x : v) cout << x << ' ';
  34.     cout << "\n";
  35. }
  36.  
  37. void cvs(vector <string>  v) {
  38.     for (auto a : v) {
  39.         cout << a << "\n";
  40.     }
  41. }
  42.  
  43. void cvp(vector <pii> a) {
  44.     for (auto p : a) {
  45.         cout << p.first << ' ' << p.second << "\n";
  46.     }
  47.     cout << "\n";
  48. }
  49.  
  50. ll f(ll A) {
  51.     ll to2 = log2(A) + 2;
  52.     ll to3 = log(A) / log(3) + 2;
  53.     ll to5 = log(A) / log(5) + 2;
  54.     ll best = pow(10, 18);
  55.     for (int a = 0; a < to2; ++a) {
  56.         int L3 = -1, R3 = to3, b;
  57.         while (L3 + 1 < R3) {
  58.             b = (L3 + R3) / 2;
  59.            
  60.            
  61.         }
  62.         //for (int b = 0; b < to3; ++b) {
  63.             //ll ch = pow(2, a) * pow(3, b);
  64.             /*if (ch >= A) {
  65.                 best = min(ch, best);
  66.                 continue;
  67.             }*/
  68.  
  69.             int L = -1, R = to5, c;
  70.             while (L + 1 < R) {
  71.                 c = (L + R) / 2;
  72.                 ll now = pow(2, a) * pow(3, b) * pow(5, c);
  73.                 if (now < A) {
  74.                     L = c;
  75.                 } else {
  76.                     R = c;
  77.                 }
  78.             }
  79.             //for (int c = 0; c < to5; ++c) {
  80.             ll res = pow(2, a) * pow(3, b) * pow(5, R);
  81.             best = min(best, res);
  82.             //}
  83.         }//
  84.     }
  85.     return best;
  86. }
  87.  
  88. int main() {
  89.     ios::sync_with_stdio(0);
  90.     cin.tie(0);
  91.     cout.tie(0);
  92.     int n;
  93.     cin >> n;
  94.     vector <ll> a(n);
  95.     for (ll &i: a) cin >> i;
  96.     for (int i = 0; i < n; ++i) {
  97.         cout << f(a[i]) << "\n";
  98.     }
  99. }
  100.  
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