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  1. #include <bits/stdc++.h>
  2. #include <ext/pb_ds/assoc_container.hpp>
  3.  
  4. using namespace std;
  5. using namespace __gnu_pbds;
  6.  
  7. typedef tree<
  8. pair<int, int>,
  9. null_type,
  10. less<pair<int, int>>,
  11. rb_tree_tag,
  12. tree_order_statistics_node_update> ordered_set;
  13.  
  14. int main()
  15. {
  16.     //freopen("input.txt", "r", stdin);
  17.     //freopen("output.txt", "w", stdout);
  18.     ios::sync_with_stdio(0);
  19.     cin.tie(0);
  20.     int n, m, l;
  21.     cin >> n >> m >> l;
  22.     pair<int, int> sq[n];
  23.     for(auto &it: sq)
  24.         cin >> it.first >> it.second;
  25.     sort(sq, sq + n);
  26.     pair<int, int> po[m];
  27.     for(auto &it: po)
  28.         cin >> it.first >> it.second;
  29.     set<int> fst;
  30.     for(int i = 0; i < n; i++)
  31.         fst.insert(sq[i].first);
  32.     for(int i = 0; i < m; i++)
  33.         fst.insert(po[i].first);
  34.     sort(po, po + m);
  35.     int ans = 0;
  36.     int i = 0, j = 0, k = 0;
  37.     ordered_set me;
  38.     for(auto it: fst)
  39.     {
  40.         while(i < n && sq[i].first == it)
  41.             me.insert({sq[i].second, i}), i++;
  42.         while(sq[k].first + l < it)
  43.             me.erase({sq[k].second, k}), k++;
  44.         while(j < m && po[j].first == it)
  45.             ans = max(ans, (int)me.order_of_key({po[j].second + 1, 0}) - (int)me.order_of_key({po[j].second - l, 0})), j++;
  46.     }
  47.     cout << ans << "\n";
  48. }
  49.  
Runtime error #stdin #stdout 0s 3464KB
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Standard input is empty
stdout
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Standard output is empty
https://ideone.com/ek41KQ
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

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