Submission #631078

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
631078	2022-08-17 16:38:35	abeker	Radio Towers (IOI22_towers)	C++17	100 / 100	2583 ms	69480 KiB

towers

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#include <bits/stdc++.h>
#include "towers.h"
using namespace std;
const int INF = INT_MAX;
class Orthogonal {
  int offset;
  vector <vector <int>> tour;
public:
  Orthogonal(vector <int> vals) {
    for (offset = 1; offset < vals.size(); offset *= 2);
    tour.resize(2 * offset);
    for (int i = 1; i < vals.size(); i++)
      tour[i + offset].push_back(vals[i]);
    for (int i = offset - 1; i; i--) {
      tour[i].resize(tour[2 * i].size() + tour[2 * i + 1].size());
      merge(tour[2 * i].begin(), tour[2 * i].end(), tour[2 * i + 1].begin(), tour[2 * i + 1].end(), tour[i].begin());
    }
  }
  Orthogonal() {}
  int query(int x, int lo, int hi, int from, int to, int val) {
    if (lo >= to || hi <= from)
      return 0;
    if (lo >= from && hi <= to)
      return lower_bound(tour[x].begin(), tour[x].end(), val) - tour[x].begin();
    int mid = (lo + hi) / 2;
    return query(2 * x, lo, mid, from, to, val) + query(2 * x + 1, mid, hi, from, to, val);
  }
  int query(int from, int to, int val) {
 
 
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Compilation message (stderr)

towers.cpp: In constructor 'Orthogonal::Orthogonal(std::vector<int>)':
towers.cpp:12:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |     for (offset = 1; offset < vals.size(); offset *= 2);
      |                      ~~~~~~~^~~~~~~~~~~~~
towers.cpp:14:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     for (int i = 1; i < vals.size(); i++)
      |                     ~~^~~~~~~~~~~~~
towers.cpp: In function 'void init_sparse()':
towers.cpp:56:52: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   56 |       mini[i][j] = min(mini[i][j - 1], i + (1 << j - 1) > N ? INF : mini[i + (1 << j - 1)][j - 1]);
      |                                                  ~~^~~
towers.cpp:56:86: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   56 |       mini[i][j] = min(mini[i][j - 1], i + (1 << j - 1) > N ? INF : mini[i + (1 << j - 1)][j - 1]);
      |                                                                                    ~~^~~

• Subtask 1: 4 / 4
• Subtask 2: 11 / 11
• Subtask 3: 12 / 12
• Subtask 4: 14 / 14
• Subtask 5: 17 / 17
• Subtask 6: 19 / 19
• Subtask 7: 23 / 23