Submission #1276484

#	Time	Username	Problem	Language	Result	Execution time	Memory
1276484		rtri	Genetics (BOI18_genetics)	C++20	19 / 100	228 ms	1264 KiB

genetics

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

int n, m, k;

int main() {
  cin.sync_with_stdio(false);
  cin >> n >> m >> k;

  vector<bitset<1800>> lines(n);
  for (int i = 0; i < n; i++) {
    string line;
    cin >> line;
    for (int j = 0; j < m; j++) {
      if (line[j] == 'A')
        lines[i][j] = 1;
    }
  }

  random_device rd;
  mt19937 g(rd());

  vector<int> order(n);
  for (int i = 0; i < n; i++)
    order[i] = i;
  shuffle(order.begin(), order.end(), g);

  vector<int> candidates = order;

  for (int j = 0; j < n; j++) {
    vector<int> new_candidates;
    for (int i = 0; i < candidates.size(); i++) {
      if (candidates[i] == order[j]) {
        new_candidates.push_back(candidates[i]);
        continue;
      }

      int diff = (lines[order[j]] ^ lines[candidates[i]]).count();
      if (diff == k)
        new_candidates.push_back(candidates[i]);
    }
    candidates = new_candidates;
  }

  assert(candidates.size() == 1);

  cout << candidates[0] + 1 << endl;
}

• Subtask 1: 0 / 27
• Subtask 2: 19 / 19
• Subtask 3: 0 / 28
• Subtask 4: 0 / 26