Submission #1268479

#TimeUsernameProblemLanguageResultExecution timeMemory
1268479ducdevGenetics (BOI18_genetics)C++17
74 / 100
1741 ms84964 KiB
// Author: 4uckd3v - Nguyen Cao Duc #include <bits/stdc++.h> using namespace std; typedef long long ll; const int MAX_N = 4100; const int MOD = 1e9 + 7; int m, n, k; char a[MAX_N + 5][MAX_N + 5]; namespace SUBTASK_1 { const int LIM = 100; int diff(int i, int j) { int cnt = 0; for (int k = 1; k <= n; k++) if (a[i][k] != a[j][k]) cnt++; return cnt; }; void Solve() { for (int i = 1; i <= m; i++) { bool real = true; for (int j = 1; j <= m; j++) { if (i == j) continue; if (diff(i, j) != k) { real = false; break; }; }; if (real) { cout << i << '\n'; break; }; }; }; }; // namespace SUBTASK_1 namespace SUBTASK_23 { const int M = MAX_N; const int N = MAX_N; int canReal[M + 5]; int cache[M + 5][M + 5]; bitset<N> bs[M]; bool checkSubtask() { for (int i = 1; i <= m; i++) for (int j = 1; j <= n; j++) if (a[i][j] != 'A' && a[i][j] != 'C') return false; return true; }; void Solve() { for (int i = 1; i <= m; i++) { for (int j = 1; j <= n; j++) { bs[i - 1].set(j - 1, a[i][j] == 'A'); }; }; memset(cache, -1, sizeof cache); for (int i = 0; i <= m; i++) canReal[i] = true; for (int i = 0; i < m; i++) { if (!canReal[i]) continue; for (int j = 0; j < m; j++) { if (i == j) continue; if (cache[i][j] == -1) cache[i][j] = cache[j][i] = (bs[i] ^ bs[j]).count(); if (cache[i][j] != k) { canReal[i] = canReal[j] = false; break; }; }; if (canReal[i]) { cout << i + 1 << '\n'; break; }; }; }; }; // namespace SUBTASK_23 int main() { ios_base::sync_with_stdio(0); cin.tie(0); if (fopen("MAIN.INP", "r")) { freopen("MAIN.INP", "r", stdin); freopen("MAIN.OUT", "w", stdout); }; cin >> m >> n >> k; for (int i = 1; i <= m; i++) { for (int j = 1; j <= n; j++) { cin >> a[i][j]; }; }; if (m <= 100 && n <= 100) return SUBTASK_1::Solve(), 0; if (SUBTASK_23::checkSubtask()) return SUBTASK_23::Solve(), 0; };

Compilation message (stderr)

genetics.cpp: In function 'int main()':
genetics.cpp:94:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   94 |         freopen("MAIN.INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
genetics.cpp:95:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   95 |         freopen("MAIN.OUT", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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