Submission #627621

#	Time	Username	Problem	Language	Result	Execution time	Memory
627621		ollel	Rarest Insects (IOI22_insects)	C++17	Compilation error	0 ms	0 KiB

insects

#include <stdc++.h>
using namespace std;

#define rep(i,a,b) for(int i = a; i < b; i++)

int query() {
  return use_machine();
}

vi perm;
set<int> in;
void add(int x) {
  if (in.find(x) != in.end()) return;
  in.insert(x);
  move_inside(perm[x]);
}

void rem(int x) {
  if (in.find(x) == in.end()) return;
  in.erase(x);
  move_outside(perm[x]);
}

int min_cardinality(int n) {
  perm.resize(n);
  rep(i,0,n) perm[i] = i;
  auto rng = std::default_random_engine {};
  shuffle(perm.begin(), perm.end(), rng);

  rep(i,0,n) {
    add(i);
    if (query() > 1) rem(i);
  }

  int types = in.size();
  int low = 1, high = n / types + 1, mid;

  vb never(n, false), always(n, false);

  while (high - low > 1) {
    mid = (low + high) / 2;
    rep(i,0,n) {
      if (never[i]) continue;
      add(i);
      if (query() > mid) rem(i);
    }
    if (in.size() == mid * types) {
      low = mid;
      for (auto i : in) always[i] = true;
    } else {
      high = mid;
      rep(i,0,n) if (in.find(i) == in.end()) never[i] = true;
      rep(i,0,n) if (!always[i]) rem(i);
    }
  }
  return mid;
}

Compilation message (stderr)

insects.cpp:1:10: fatal error: stdc++.h: No such file or directory
    1 | #include <stdc++.h>
      |          ^~~~~~~~~~
compilation terminated.