oj.uz

Submission #785924

# Submission time Handle Problem Language Result Execution time Memory
785924 2023-07-17T19:12:34 Z MilosMilutinovic Rima (COCI17_rima) C++14
42 / 140
 1000 ms 262144 KB 
/**
 *    author:  wxhtzdy
 *    created: 17.07.2023 21:06:38
**/
#include <bits/stdc++.h>

using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);  
  int n;
  cin >> n;
  vector<string> s(n);
  for (int i = 0; i < n; i++) {
    cin >> s[i];
  }
  vector<vector<bool>> f(n, vector<bool>(n));
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < n; j++) {
      int si = (int) s[i].size();
      int sj = (int) s[j].size();
      int ptr = 0;   
      while (ptr < min(si, sj) && s[i][si - ptr - 1] == s[j][sj - ptr - 1]) {
        ptr += 1;
      }   
      f[i][j] = f[j][i] = (ptr >= max(si, sj) - 1);
    }
  }
  vector<vector<bool>> dp(1 << n, vector<bool>(n));
  for (int i = 0; i < n; i++) {
    dp[1 << i][i] = true;
  }
  for (int mask = 1; mask < (1 << n); mask++) {
    for (int i = 0; i < n; i++) {
      if (!dp[mask][i]) {
        continue;
      }
      for (int j = 0; j < n; j++) {
        if (mask >> j & 1) {
          continue;
        }
        if (f[i][j]) {
          dp[mask ^ (1 << j)][j] = true;
        }
      }
    }
  }
  int ans = 0;
  for (int mask = 0; mask < (1 << n); mask++) {
    for (int i = 0; i < n; i++) {
      if (dp[mask][i]) {
        ans = max(ans, __builtin_popcount(mask));
      }
    }
  }
  cout << ans << '\n';                       
  return 0;
}

Subtask #1
42.0 / 140.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 4948 KB Output is correct
2 Correct 27 ms 18772 KB Output is correct
3 Correct 26 ms 18724 KB Output is correct
4 Runtime error 132 ms 262144 KB Execution killed with signal 9
5 Execution timed out 1059 ms 6996 KB Time limit exceeded
6 Runtime error 275 ms 13924 KB Execution killed with signal 11
7 Runtime error 157 ms 3020 KB Execution killed with signal 6
8 Runtime error 64 ms 2208 KB Execution killed with signal 11
9 Execution timed out 1067 ms 34628 KB Time limit exceeded
10 Runtime error 88 ms 2212 KB Execution killed with signal 11