Submission #1184216

#	Time	Username	Problem	Language	Result	Execution time	Memory
1184216		lopkus	Genetics (BOI18_genetics)	C++20	46 / 100	938 ms	58072 KiB

genetics

#include <bits/stdc++.h>

using i64 = long long;
using u64 = unsigned long long;
using u32 = unsigned;
using u128 = unsigned __int128;

const int M = 1801;

std::bitset<M> B[M][4];

void solve() {
  int n, m, k;
  std::cin >> n >> m >> k;
  std::vector<std::vector<int>> a(n, std::vector<int>(m));
  for(int i = 0; i < n; i++) {
    for(int j = 0; j < m; j++) {
      char x;
      std::cin >> x;
      if(x == 'A') {
        a[i][j] = 0;
      }
      if(x == 'C') {
        a[i][j] = 1;
      }
      if(x == 'G') {
        a[i][j] = 2;
      }
      if(x == 'T') {
        a[i][j] = 3;
      }
    }
  }
  /**
  for(int i = 1; i <= n; i++) {
    int is = 1;
    for(int ath = 1; ath <= n; ath++) {
      if(i == ath) {
        continue;
      }
      int diff = 0;
      for(int x = 1; x <= m; x++) {
        diff += (a[i][x] != a[ath][x]);
      }
      is &= (diff == k);
    }
    if(is) {
      std::cout << i;
      return;
    }
  }**/
  for(int i = 0; i < n; i++) {
    for(int j = 0; j < m; j++) {
      B[i][a[i][j]].set(j);
    }
  }
  std::vector<std::vector<int>> cnt(n + 1, std::vector<int>(4));
  for(int i = 0; i < n; i++) {
    for(int j = 0; j < m; j++) {
      cnt[i][a[i][j]] += 1;
    }
  }
  for(int i = 0; i < n; i++) {
    int can = 1;
    for(int ath = 0; ath < n; ath++) {
      if(i == ath) {
        continue;
      }
      int diff = 0;
      for(int x = 0; x < 4; x++) {
        diff += cnt[i][x] - (B[i][x] & B[ath][x]).count();
      }
      can &= (diff == k);
      if(!can) {
        break;
      }
    }
    if(can) {
      std::cout << i + 1;
      return;
    }
  }
}

int main() {
  std::ios::sync_with_stdio(false);
  std::cin.tie(nullptr);

  int t = 1;
  //std::cin >> t;
  while (t--) {
      solve();
  }

  return 0;
}

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