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  1. /*
  2.     author  : [ Godsent ]
  3.     created : 2025.08.09 23:29:14
  4. */
  5.  
  6. #include <bits/stdc++.h>
  7. #define el "\n"
  8. #define int long long
  9. #define lb lower_bound
  10. #define ub upper_bound
  11. #define fi first
  12. #define se second
  13. #define sz(x) ((int)(x).size())
  14. #define all(v) (v).begin(), (v).end()
  15. #define pb push_back
  16. #define prs(n) fixed << setprecision(n)
  17.  
  18. const int mod = 1e9 + 7;
  19. const int N = 2e5 + 5;
  20. const int INF = 1e18;
  21.  
  22. using namespace std;
  23.  
  24. int q;
  25. multiset<int> ms;
  26.  
  27. signed main() {
  28.   ios_base::sync_with_stdio(false);
  29.   cin.tie(0);
  30.   cout.tie(0);
  31.  
  32. #ifndef ONLINE_JUDGE
  33.   freopen("test.inp", "r", stdin);
  34.   freopen("test.out", "w", stdout);
  35. #endif
  36.  
  37.   cin >> q;
  38.   while(q--) {
  39.     int type, x, k;
  40.     cin >> type;
  41.     if (type == 1) {
  42.       cin >> x;
  43.       ms.insert(x);
  44.     }
  45.     else if (type == 2) {
  46.       cin >> x >> k;
  47.       auto pos = distance(ms.begin(), ub(all(ms), x));
  48.       auto it = ub(all(ms), x);
  49.       ++pos;
  50.       if (pos - 1 < k) cout << -1 << el;
  51.       else {
  52.         while(k--) it--;
  53.         cout << *it << el;
  54.       }
  55.     }
  56.     else {
  57.       cin >> x >> k;
  58.       auto pos = distance(ms.begin(), lb(all(ms), x));
  59.       auto it = lb(all(ms), x);
  60.       ++pos;
  61.       if (sz(ms) - pos + 1 < k) cout << -1 << el;
  62.       else {
  63.         --k;
  64.         while(k--) it++;
  65.         cout << *it << el;
  66.       }
  67.     }
  68.   }
  69.  
  70.   return 0;
  71. }
Success #stdin #stdout 0s 5316KB
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https://ideone.com/WZSdnG
language:
C++14 (gcc 8.3)
created:
2 days ago
visibility:
public

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