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  1. #include <bits/stdc++.h>
  2. #include <ext/pb_ds/assoc_container.hpp>
  3. #include <ext/pb_ds/tree_policy.hpp>
  4.  
  5. using namespace std;
  6. using namespace __gnu_pbds;
  7. using ll = long long;
  8. using ld = long double;
  9.  
  10. #define all(x)  x.begin(),x.end()
  11. #define v(x) vector<x>
  12. #define nl '\n'
  13. #define fxd(x) fixed << setprecision(x)
  14. template<class t> using ordered_set = tree<t, null_type, less<t>, rb_tree_tag, tree_order_statistics_node_update>;
  15. template<class t> using ordered_multiset = tree<t, null_type, less_equal<t>, rb_tree_tag, tree_order_statistics_node_update>;
  16.  
  17.  
  18. int main()
  19. {
  20.     ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
  21.     ll w , h , n; cin >> w >> h >> n;
  22.     ll heigh = max(h,w)*n , low = 0 ,mid;
  23.     ll pos;
  24.     while (low <= heigh)
  25.     {
  26.         mid = (low+heigh) /2;
  27.         if((mid/w) * (mid/h) >= n)
  28.         {
  29.             heigh = mid  -1;
  30.             pos = mid;
  31.         }
  32.         else
  33.         {
  34.             low = mid+1;
  35.         }
  36.     }
  37.     cout << pos;
  38. }
Success #stdin #stdout 0.01s 5312KB
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https://ideone.com/yQxnfg
language:
C++ (gcc 8.3)
created:
1 hour ago
visibility:
public

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