Submission #1070849

#	Time	Username	Problem	Language	Result	Execution time	Memory
1070849		JoenPoenMan	Rarest Insects (IOI22_insects)	C++17	Compilation error	0 ms	0 KiB

insects

#include "insects.h"

#include <bits/stdc++.h>

using namespace std;

int min_cardinality(int n) {
  int k = 0;
  vector<int> S;
  for (int i = 0; i< n; i++) {
      move_inside(i);
      if (press_button() == 2) {
          move_outside(i);
      } else S.push_back(i);
  }
  k = S.size();
  
  
  int _n = n, y = 0;
  vector<bool> active(n, 1);
while (_n > 8) { 
      int x = (_n+2*k-1)/(2*k);
      for (int i : S) move_outside(i);
      S.clear();
      for (int i = 0; i< n; i++) if (active[i]) {
          move_inside(i);
          if (press_button() == x+1) {
              move_outside(i);
          } else S.push_back(i);
      }
      
      if (S.size() < x*k) {
          active.assign(n, 0);
          _n = 0;
          for (int i : S) active[i] = 1, _n++;
      } else {
          for (int i : S) {
              _n -= active[i];
              active[i] = 0;
          }
          y += x;
      }
      
  }
  
  int l = 0, h = _n;
  while (l < h) {
      int x = (l+h+1)/2;
      for (int i : S) move_outside(i);
      S.clear();
      for (int i = 0; i< n; i++) if (active[i]) {
          move_inside(i);
          if (press_button() == x+1) {
              move_outside(i);
          } else S.push_back(i);
      }
      
      if (S.size() < x*k) {
          h = x-1;
      } else {
          l = x;
      }
  }
  return y+l;
}

Compilation message (stderr)

insects.cpp:20:2: error: extended character   is not valid in an identifier
   20 |   vector<bool> active(n, 1);
      |  ^
insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:20:2: error: '\U000000a0vector' was not declared in this scope
   20 |   vector<bool> active(n, 1);
      |  ^~~~~~~
insects.cpp:20:11: error: expected primary-expression before 'bool'
   20 |   vector<bool> active(n, 1);
      |          ^~~~
insects.cpp:25:38: error: 'active' was not declared in this scope; did you mean 'ctime'?
   25 |       for (int i = 0; i< n; i++) if (active[i]) {
      |                                      ^~~~~~
      |                                      ctime
insects.cpp:32:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   32 |       if (S.size() < x*k) {
      |           ~~~~~~~~~^~~~~
insects.cpp:33:11: error: 'active' was not declared in this scope; did you mean 'ctime'?
   33 |           active.assign(n, 0);
      |           ^~~~~~
      |           ctime
insects.cpp:38:21: error: 'active' was not declared in this scope; did you mean 'ctime'?
   38 |               _n -= active[i];
      |                     ^~~~~~
      |                     ctime
insects.cpp:51:38: error: 'active' was not declared in this scope; did you mean 'ctime'?
   51 |       for (int i = 0; i< n; i++) if (active[i]) {
      |                                      ^~~~~~
      |                                      ctime
insects.cpp:58:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   58 |       if (S.size() < x*k) {
      |           ~~~~~~~~~^~~~~