Submission #303492

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
303492	2020-09-20 11:09:04	rama_pang	Counting Mushrooms (IOI20_mushrooms)	C++14	100 / 100	19 ms	1408 KiB

mushrooms

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#include "mushrooms.h"
#include <bits/stdc++.h>
using namespace std;
int count_mushrooms(int n) {
  const auto Solve = [&](int size_limit) {
    int ans = 1;
    set<int> unknown;
    for (int i = 1; i < n; i++) {
      unknown.emplace(i);
    }
    vector<int> A, B;
    A.emplace_back(0);
    while (!unknown.empty() && (int) max(A.size(), B.size()) < size_limit) {
      if (unknown.size() == 1 || max(A.size(), B.size()) == 1) {
        // query A?
        // can identify ?
        int u = *begin(unknown);
        unknown.erase(u);
        if (use_machine({0, u}) == 1) {
          B.emplace_back(u);
        } else {
          A.emplace_back(u);
          ans += 1;
        }
      } else if (unknown.size() < 5 || max(A.size(), B.size()) < 3 || min(A.size(), B.size()) < 2) {
        // query A?A?
        // can identify both ?
 
 
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• Subtask 1: 100 / 100