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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. using namespace std;
  5. using namespace __gnu_pbds;
  6. typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> orderedset;
  7. #define MO2 ios_base::sync_with_stdio(false);cin.tie(NULL);
  8. #define endl '\n'
  9. #define int long long
  10. #define elif else if
  11. #define sz(x) long(x.size())
  12. #define all(vec) vec.begin(), vec.end()
  13. const int mod = 1e9 + 7;
  14. const int dx[] = {0, -1, 0, 1, 1, -1, 1, -1};
  15. const int dy[] = {-1, 0, 1, 0, 1, 1, -1, -1};
  16.  
  17.  
  18. int n, m, k;
  19. string s, z;
  20. void dope() {}
  21.  
  22. bool can (int mid) {
  23.     int seats = m / mid;
  24.     int rem = m % mid;
  25.     if (rem < seats - 1)
  26.         rem += mid, seats--;
  27.     rem -= (seats - 1);
  28.     seats += rem;
  29.     return seats * (mid - 1) * n >= k;
  30. }
  31.  
  32. int BS() {
  33.     int l = 1, r = m, ans = -1;
  34.     while (l <= r) {
  35.         int mid = (l + r) / 2;
  36.         if (can(mid)) {
  37.             ans = mid;
  38.             r = mid - 1;
  39.         }
  40.         else
  41.             l = mid + 1;
  42.     }
  43.     return ans;
  44. }
  45. void solve() {
  46.     cin >> n >> m >> k;
  47.     cout << BS();
  48. }
  49. signed main() {
  50.     MO2
  51. #if ONLINE_JUDGE || CPH
  52. #else
  53.     freopen("Input.txt", "r", stdin);
  54.     freopen("Output.txt", "w", stdout);
  55. #endif
  56.     int nop = 1;  cin >> nop;
  57.     while (nop--)
  58.     {
  59.         solve();
  60.         if (nop)
  61.             cout << endl;
  62.     }
  63.     return 0;
  64. }
Success #stdin #stdout 0.01s 5284KB
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https://ideone.com/GdkwPf
language:
C++ (gcc 8.3)
created:
11 days ago
visibility:
public

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