oj.uz

답안 #1035307

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1035307 2024-07-26T09:07:48 Z vjudge1 Political Development (BOI17_politicaldevelopment) C++17
4 / 100
 3000 ms 312620 KB 
#pragma GCC optimize("Ofast,unroll-loops,no-stack-protector,fast-math,inline")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,lzcnt,mmx,abm,avx,avx2,fma")
#include <bits/stdc++.h>
using namespace std;

const int N = 5e4;

mt19937 rng(time(nullptr) + 69);

int n, k, cnt[N];
vector<int> rem, adj[N];
bitset<N> bt[N], curr;

bool solve(int tot, int x, int y) {
  //cerr << tot << " " << x << " " << y << " " << curr.count() << endl;
  if (curr.count() < tot) return 0;
  else if (!x) return 1;

  // tengo que pillar x mas, mayores que y, tengo curr odiados

  vector<int> temp;
  int sz = rem.size();
  for (int i = sz-1; i >= 0; i--) {
    if (rem[i] <= y) break;
    temp.push_back(rem[i]);
  }
  shuffle(temp.begin(), temp.end(), rng);

  sz = temp.size();
  if (sz < x-1) return 0;
  for (int i = 0; i < sz; i++) {
    bitset<N> prv = curr;
    curr &= bt[temp[i]];
    if (solve(tot, x-1, temp[i])) return 1;
    swap(curr, prv);
  }
  return 0;
}

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

  cin >> n >> k;
  memset(cnt, 0, sizeof(cnt));
  rem.resize(n);
  for (int i = 0; i < n; i++) {
    rem[i] = i;
    int x; cin >> x;
    bt[i][i] = 1;
    cnt[i]++;
    adj[i].push_back(i);
    for (int j = 0; j < x; j++) {
      int y; cin >> y;
      bt[i][y] = 1;
      cnt[y]++;
      adj[i].push_back(y);
    }
  }

  int ans = 0;
  for (int i = 1; i <= k; i++) {
    curr.reset();
    for (int& j : rem) curr[j] = 1;
    if (!solve(i, i, -1)) break;
    ans = i;

    // limpiar
    //while (1) {
      int sz = rem.size();
      vector<int> nw;
      bool ch = 0;
      for (int j = 0; j < sz; j++) {
        int c = 0;
        for (int& k : adj[rem[j]]) {
          if (cnt[k] >= i) c++; 
        }
        if (c >= i) {
          nw.push_back(rem[j]);
          continue;
        }
        ch = 1;
        for (int& k : adj[rem[j]]) {
          cnt[k]--;
        }
      }
      swap(nw, rem);
      //if (!ch) break;
    //}
  }

  cout << ans << "\n";
}

Compilation message

politicaldevelopment.cpp: In function 'bool solve(int, int, int)':
politicaldevelopment.cpp:16:20: warning: comparison of integer expressions of different signedness: 'std::size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   16 |   if (curr.count() < tot) return 0;
      |       ~~~~~~~~~~~~~^~~~~
politicaldevelopment.cpp: In function 'int main()':
politicaldevelopment.cpp:71:12: warning: variable 'ch' set but not used [-Wunused-but-set-variable]
   71 |       bool ch = 0;
      |            ^~

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1628 KB Output is correct
2 Correct 1 ms 1884 KB Output is correct
3 Correct 16 ms 23384 KB Output is correct
4 Correct 11 ms 22916 KB Output is correct
5 Correct 12 ms 22876 KB Output is correct
6 Correct 13 ms 23176 KB Output is correct
7 Correct 11 ms 23128 KB Output is correct
8 Correct 15 ms 22108 KB Output is correct
9 Correct 1 ms 1780 KB Output is correct
10 Correct 13 ms 22044 KB Output is correct

Subtask #2
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1628 KB Output is correct
2 Correct 1 ms 1884 KB Output is correct
3 Correct 16 ms 23384 KB Output is correct
4 Correct 11 ms 22916 KB Output is correct
5 Correct 12 ms 22876 KB Output is correct
6 Correct 13 ms 23176 KB Output is correct
7 Correct 11 ms 23128 KB Output is correct
8 Correct 15 ms 22108 KB Output is correct
9 Correct 1 ms 1780 KB Output is correct
10 Correct 13 ms 22044 KB Output is correct
11 Correct 23 ms 23132 KB Output is correct
12 Correct 21 ms 23132 KB Output is correct
13 Correct 1 ms 1628 KB Output is correct
14 Correct 18 ms 23024 KB Output is correct
15 Correct 1 ms 1628 KB Output is correct
16 Correct 162 ms 23312 KB Output is correct
17 Correct 2 ms 1624 KB Output is correct
18 Correct 168 ms 23196 KB Output is correct
19 Correct 17 ms 22108 KB Output is correct
20 Correct 23 ms 23128 KB Output is correct
21 Correct 18 ms 23084 KB Output is correct
22 Correct 16 ms 22108 KB Output is correct
23 Correct 1557 ms 23644 KB Output is correct
24 Correct 12 ms 22108 KB Output is correct
25 Correct 1057 ms 23900 KB Output is correct
26 Execution timed out 3053 ms 23388 KB Time limit exceeded
27 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 22108 KB Output is correct
2 Correct 1 ms 1884 KB Output is correct
3 Correct 1 ms 1884 KB Output is correct
4 Correct 1 ms 1884 KB Output is correct
5 Correct 1 ms 1884 KB Output is correct
6 Correct 1 ms 1884 KB Output is correct
7 Correct 1 ms 1884 KB Output is correct
8 Correct 1 ms 1884 KB Output is correct
9 Correct 1 ms 1880 KB Output is correct
10 Correct 2 ms 1884 KB Output is correct
11 Execution timed out 3042 ms 312620 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1628 KB Output is correct
2 Correct 1 ms 1884 KB Output is correct
3 Correct 16 ms 23384 KB Output is correct
4 Correct 11 ms 22916 KB Output is correct
5 Correct 12 ms 22876 KB Output is correct
6 Correct 13 ms 23176 KB Output is correct
7 Correct 11 ms 23128 KB Output is correct
8 Correct 15 ms 22108 KB Output is correct
9 Correct 1 ms 1780 KB Output is correct
10 Correct 13 ms 22044 KB Output is correct
11 Correct 23 ms 23132 KB Output is correct
12 Correct 21 ms 23132 KB Output is correct
13 Correct 1 ms 1628 KB Output is correct
14 Correct 18 ms 23024 KB Output is correct
15 Correct 1 ms 1628 KB Output is correct
16 Correct 162 ms 23312 KB Output is correct
17 Correct 2 ms 1624 KB Output is correct
18 Correct 168 ms 23196 KB Output is correct
19 Correct 17 ms 22108 KB Output is correct
20 Correct 23 ms 23128 KB Output is correct
21 Correct 18 ms 23084 KB Output is correct
22 Correct 16 ms 22108 KB Output is correct
23 Correct 1557 ms 23644 KB Output is correct
24 Correct 12 ms 22108 KB Output is correct
25 Correct 1057 ms 23900 KB Output is correct
26 Execution timed out 3053 ms 23388 KB Time limit exceeded
27 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1628 KB Output is correct
2 Correct 1 ms 1884 KB Output is correct
3 Correct 16 ms 23384 KB Output is correct
4 Correct 11 ms 22916 KB Output is correct
5 Correct 12 ms 22876 KB Output is correct
6 Correct 13 ms 23176 KB Output is correct
7 Correct 11 ms 23128 KB Output is correct
8 Correct 15 ms 22108 KB Output is correct
9 Correct 1 ms 1780 KB Output is correct
10 Correct 13 ms 22044 KB Output is correct
11 Correct 23 ms 23132 KB Output is correct
12 Correct 21 ms 23132 KB Output is correct
13 Correct 1 ms 1628 KB Output is correct
14 Correct 18 ms 23024 KB Output is correct
15 Correct 1 ms 1628 KB Output is correct
16 Correct 162 ms 23312 KB Output is correct
17 Correct 2 ms 1624 KB Output is correct
18 Correct 168 ms 23196 KB Output is correct
19 Correct 17 ms 22108 KB Output is correct
20 Correct 23 ms 23128 KB Output is correct
21 Correct 18 ms 23084 KB Output is correct
22 Correct 16 ms 22108 KB Output is correct
23 Correct 1557 ms 23644 KB Output is correct
24 Correct 12 ms 22108 KB Output is correct
25 Correct 1057 ms 23900 KB Output is correct
26 Execution timed out 3053 ms 23388 KB Time limit exceeded
27 Halted 0 ms 0 KB -