oj.uz

답안 #304290

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
304290 2020-09-21T05:50:17 Z Fdg 버섯 세기 (IOI20_mushrooms) C++14
96.9957 / 100
 19 ms 736 KB 
#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <algorithm>
#include "mushrooms.h"

using namespace std;

const int VAL = 110;

vector<int> a, b, missing;

map<int, vector<int>> diff, eq;
set<int> found;

void nextPos(const vector<int>& v, int& pos) {
  while (pos < (int) v.size()) {
    if (found.count(v[pos])) {
      ++pos;
    } else break;
  }
}

void process(int x, bool isA) {
  if (found.count(x)) return;
  found.insert(x);

  if (isA) a.push_back(x);
  else b.push_back(x);

  if (diff.count(x))
    for (int val : diff[x]) {
      process(val, !isA);
    }

  if (eq.count(x))
    for (int val : eq[x]) {
      process(val, isA);
    }
}

int count_mushrooms(int n) {
  a.clear(); b.clear(); diff.clear(); found.clear(); missing.clear();

  srand(time(NULL));
  vector<int> v;
  for (int i = 0; i < n; ++i)
    v.push_back(i);
  for (int it = 0; it < 1; ++it) {
    random_shuffle(v.begin(), v.end());
    use_machine(v);
  }

  v.clear();
  for (int i = 1; i < n; ++i)
    v.push_back(i);
  random_shuffle(v.begin(), v.end());

  v.push_back(0);
  use_machine(v);
  v.pop_back();

  int ans = 0, pos = 0;

  bool doNextSimple = false;

  double COEF = 1.2;
  int iter = 1;

  a.push_back(0); found.insert(0);
  while (a.size() < VAL && b.size() < VAL && pos < (int) v.size()) {
    // if (a.size() > 100 && a.size() > COEF * b.size()) break;
    // if (b.size() > 100 && b.size() > COEF * a.size()) break;

    if ((n - a.size() - b.size()) / max(a.size(), b.size()) + iter <= 226) break;
    ++iter;
    // if (iter >= VAL) break;

    if (a.size() > 2) {
      vector<int> arr;
      nextPos(v, pos);
      if (pos < (int) v.size()) {
        arr.push_back(a[0]);
        arr.push_back(v[pos]), ++pos;
      }
      nextPos(v, pos);
      if (pos < (int) v.size()) {
        arr.push_back(a[1]);
        arr.push_back(v[pos]), ++pos; 
      }
      nextPos(v, pos);
      if (pos < (int) v.size()) {
        arr.push_back(a[2]);
        arr.push_back(v[pos]), ++pos; 
      }

      doNextSimple = false;
      int ret = use_machine(arr);
      if (arr.size() == 2) {
        if (ret == 1) {
          process(arr[1], false);
        } else {
          process(arr[1], true);
        }
      } else if (arr.size() == 4) {
        if (ret == 3) {
          process(arr[1], false);
          process(arr[3], false);
        } else if (ret == 2) {
          process(arr[1], false);
          process(arr[3], true);
        } else if (ret == 1) {
          process(arr[1], true);
          process(arr[3], false); 
        } else {
          process(arr[1], true);
          process(arr[3], true);
        }
      } else if (arr.size() == 6) {
        if (ret == 5) {
          process(arr[1], false);
          process(arr[3], false);
          process(arr[5], false);
        } else if (ret == 4) {
          process(arr[1], false);
          process(arr[3], false);
          process(arr[5], true);
        } else if (ret == 3) {
          process(arr[5], false);
          diff[arr[1]].push_back(arr[3]);
          diff[arr[3]].push_back(arr[1]);
          missing.push_back(arr[1]);
          --pos;
          v[pos] = arr[3];
          if (pos + 2 < (int) v.size()) swap(v[pos], v[pos + 2]);
          doNextSimple = true;
        } else if (ret == 2) {
          process(arr[5], true);
          diff[arr[1]].push_back(arr[3]);
          diff[arr[3]].push_back(arr[1]);
          missing.push_back(arr[1]);
          --pos;
          v[pos] = arr[3];
          if (pos + 2 < (int) v.size()) swap(v[pos], v[pos + 2]);
          doNextSimple = true;
        } else if (ret == 1) {
          process(arr[1], true);
          process(arr[3], true);
          process(arr[5], false);
        } else {
          process(arr[1], true);
          process(arr[3], true);
          process(arr[5], true);
        }
      }
    } else if (b.size() > 2) {
      vector<int> arr;
      nextPos(v, pos);
      if (pos < (int) v.size()) {
        arr.push_back(b[0]);
        arr.push_back(v[pos]), ++pos;
      }
      nextPos(v, pos);
      if (pos < (int) v.size()) {
        arr.push_back(b[1]);
        arr.push_back(v[pos]), ++pos; 
      }
      nextPos(v, pos);
      if (pos < (int) v.size()) {
        arr.push_back(b[2]);
        arr.push_back(v[pos]), ++pos; 
      }

      doNextSimple = false;
      int ret = use_machine(arr);
      if (arr.size() == 2) {
        if (ret == 1) {
          process(arr[1], true);
        } else {
          process(arr[1], false);
        }
      } else if (arr.size() == 4) {
        if (ret == 3) {
          process(arr[1], true);
          process(arr[3], true);
        } else if (ret == 2) {
          process(arr[1], true);
          process(arr[3], false);
        } else if (ret == 1) {
          process(arr[1], false);
          process(arr[3], true); 
        } else {
          process(arr[1], false);
          process(arr[3], false);
        }
      } else if (arr.size() == 6) {
        if (ret == 5) {
          process(arr[1], true);
          process(arr[3], true);
          process(arr[5], true);
        } else if (ret == 4) {
          process(arr[1], true);
          process(arr[3], true);
          process(arr[5], false);
        } else if (ret == 3) {
          process(arr[5], true);
          diff[arr[1]].push_back(arr[3]);
          diff[arr[3]].push_back(arr[1]);
          missing.push_back(arr[3]);
          --pos;
          v[pos] = arr[1];
          if (pos + 2 < (int) v.size()) swap(v[pos], v[pos + 2]);
          doNextSimple = true;
        } else if (ret == 2) {
          process(arr[5], false);
          diff[arr[1]].push_back(arr[3]);
          diff[arr[3]].push_back(arr[1]);
          missing.push_back(arr[3]);
          --pos;
          v[pos] = arr[1];
          if (pos + 2 < (int) v.size()) swap(v[pos], v[pos + 2]);
          doNextSimple = true;
        } else if (ret == 1) {
          process(arr[1], false);
          process(arr[3], false);
          process(arr[5], true);
        } else {
          process(arr[1], false);
          process(arr[3], false);
          process(arr[5], false);
        }
      }
    } else

    /*if (a.size() > 1) {
      vector<int> arr;
      nextPos(v, pos);
      if (pos < (int) v.size()) {
        arr.push_back(v[pos]), ++pos;
        arr.push_back(a[0]);
      }
      nextPos(v, pos);
      if (pos < (int) v.size()) {
        arr.push_back(v[pos]), ++pos;
        arr.push_back(a[1]); 
      }
      if (!doNextSimple) {
        nextPos(v, pos);
        if (pos < (int) v.size()) arr.push_back(v[pos]), ++pos;
      }

      doNextSimple = false;
      int ret = use_machine(arr);
      if (arr.size() == 2) {
        if (ret == 1) {
          process(arr[0], false);
        } else {
          process(arr[0], true);
        }
      } else if (arr.size() == 4) {
        if (ret == 3) {
          process(arr[0], false);
          process(arr[2], false);
        } else if (ret == 2) {
          process(arr[0], true);
          process(arr[2], false);
        } else if (ret == 1) {
          process(arr[0], false);
          process(arr[2], true); 
        } else {
          process(arr[0], true);
          process(arr[2], true);
        }
      } else if (arr.size() == 5) {
        if (ret == 4) {
          process(arr[0], false);
          process(arr[2], false);
          process(arr[4], false);
        } else if (ret == 3) {
          process(arr[2], false);
          diff[arr[0]].push_back(arr[4]);
          diff[arr[4]].push_back(arr[0]);
          missing.push_back(arr[4]);
          --pos;
          v[pos] = arr[0];
          if (pos + 1 < (int) v.size()) swap(v[pos], v[pos + 1]);
          doNextSimple = true;
        } else if (ret == 2) {
          diff[arr[0]].push_back(arr[2]);
          diff[arr[2]].push_back(arr[0]);
          diff[arr[4]].push_back(arr[2]);
          diff[arr[2]].push_back(arr[4]);
          eq[arr[0]].push_back(arr[4]);
          eq[arr[4]].push_back(arr[0]);
          missing.push_back(arr[0]);
          missing.push_back(arr[4]);
          --pos;
          v[pos] = arr[2];
          if (pos + 1 < (int) v.size()) swap(v[pos], v[pos + 1]);
          doNextSimple = true;
        } else if (ret == 1) {
          process(arr[2], true);
          diff[arr[0]].push_back(arr[4]);
          diff[arr[4]].push_back(arr[0]);
          missing.push_back(arr[4]);
          --pos;
          v[pos] = arr[0];
          if (pos + 1 < (int) v.size()) swap(v[pos], v[pos + 1]);
          doNextSimple = true;
        } else {
          process(arr[0], true);
          process(arr[2], true);
          process(arr[4], true);
        }
      }
    } else if (b.size() > 1) {
      vector<int> arr;
      nextPos(v, pos);
      if (pos < (int) v.size()) {
        arr.push_back(v[pos]), ++pos;
        arr.push_back(b[0]);
      }
      nextPos(v, pos);
      if (pos < (int) v.size()) {
        arr.push_back(v[pos]), ++pos;
        arr.push_back(b[1]); 
      }
      if (!doNextSimple) {
        nextPos(v, pos);
        if (pos < (int) v.size()) arr.push_back(v[pos]), ++pos;
      }

      doNextSimple = false;
      int ret = use_machine(arr);
      if (arr.size() == 2) {
        if (ret == 1) {
          process(arr[0], true);
        } else {
          process(arr[0], false);
        }
      } else if (arr.size() == 4) {
        if (ret == 3) {
          process(arr[0], true);
          process(arr[2], true);
        } else if (ret == 2) {
          process(arr[0], false);
          process(arr[2], true);
        } else if (ret == 1) {
          process(arr[0], true);
          process(arr[2], false); 
        } else {
          process(arr[0], false);
          process(arr[2], false);
        }
      } else if (arr.size() == 5) {
        if (ret == 4) {
          process(arr[0], true);
          process(arr[2], true);
          process(arr[4], true);
        } else if (ret == 3) {
          process(arr[2], true);
          diff[arr[0]].push_back(arr[4]);
          diff[arr[4]].push_back(arr[0]);
          missing.push_back(arr[4]);
          --pos;
          v[pos] = arr[0];
          if (pos + 1 < (int) v.size()) swap(v[pos], v[pos + 1]);
          doNextSimple = true;
        } else if (ret == 2) {
          diff[arr[0]].push_back(arr[2]);
          diff[arr[2]].push_back(arr[0]);
          diff[arr[4]].push_back(arr[2]);
          diff[arr[2]].push_back(arr[4]);
          eq[arr[0]].push_back(arr[4]);
          eq[arr[4]].push_back(arr[0]);
          missing.push_back(arr[0]);
          missing.push_back(arr[4]);
          --pos;
          v[pos] = arr[2];
          if (pos + 1 < (int) v.size()) swap(v[pos], v[pos + 1]);
          doNextSimple = true;
        } else if (ret == 1) {
          process(arr[2], false);
          diff[arr[0]].push_back(arr[4]);
          diff[arr[4]].push_back(arr[0]);
          missing.push_back(arr[4]);
          --pos;
          v[pos] = arr[0];
          if (pos + 1 < (int) v.size()) swap(v[pos], v[pos + 1]);
          doNextSimple = true;
        } else {
          process(arr[0], false);
          process(arr[2], false);
          process(arr[4], false);
        }
      }
    } else */{
      vector<int> arr = {a[0]};
      nextPos(v, pos);
      if (pos < (int) v.size()) arr.push_back(v[pos]), ++pos;
      else break;

      doNextSimple = false;
      int ret = use_machine(arr);
      if (ret & 1) {
        process(arr[1], false);
      } else {
        process(arr[1], true);
      }
    }
  }

  ans = a.size();

  // if (a.size() + b.size() != n) exit(-1);

  for (int x : missing) {
    if (!found.count(x))
      v.push_back(x);
  }

  if (a.size() >= b.size()) {
    while (pos < (int) v.size()) {
      vector<int> arr;
      int used = 0;
      for (int i = 0; i < (int) a.size(); ++i) {
        arr.push_back(a[i]);
        nextPos(v, pos);
        if (pos < (int) v.size()) {
          if (i + 1 == (int) a.size()) {
            arr.push_back(v.back());
            v.pop_back();
          } else {
            arr.push_back(v[pos]), ++pos;
          }
          ++used;
        } else break;
      }
      int ret = use_machine(arr);
      int diff = (ret / 2) + (ret & 1);
      ans += used - diff;
      if (ret & 1) {
        b.push_back(arr.back());
      } else {
        a.push_back(arr.back());
      }
    }
  } else {
    while (pos < (int) v.size()) {
      vector<int> arr;
      int used = 0;
      for (int i = 0; i < (int) b.size(); ++i) {
        arr.push_back(b[i]);
        nextPos(v, pos);
        if (pos < (int) v.size()) {
          if (i + 1 == (int) b.size()) {
            arr.push_back(v.back());
            v.pop_back();
          } else {
            arr.push_back(v[pos]), ++pos;
          }
          ++used;
        } else break;
      }
      int ret = use_machine(arr);
      int diff = (ret / 2) + (ret & 1);
      ans += diff;
      if (ret & 1) {
        a.push_back(arr.back());
      } else {
        b.push_back(arr.back());
      }
    }
  }

  return ans;
}

// int count_mushrooms(int n) {
//   int ans = 1;
//   for (int i = 1; i < n; i += 2) {
//     vector<int> v;
//     if (i + 1 < n) v = {i, 0, i + 1};
//     else v = {i, 0};
//     int ret = use_machine(v);
//     ans += (v.size() - 1) - ret;
//   }
//   return ans;
// }

// int main() {
//   ios::sync_with_stdio(false);

//   return 0; 
// }

Compilation message

mushrooms.cpp: In function 'int count_mushrooms(int)':
mushrooms.cpp:66:8: warning: variable 'doNextSimple' set but not used [-Wunused-but-set-variable]
   66 |   bool doNextSimple = false;
      |        ^~~~~~~~~~~~
mushrooms.cpp:68:10: warning: unused variable 'COEF' [-Wunused-variable]
   68 |   double COEF = 1.2;
      |          ^~~~

Subtask #1
96.9957 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 13 ms 600 KB Output is correct
8 Correct 13 ms 604 KB Output is correct
9 Correct 13 ms 724 KB Output is correct
10 Correct 14 ms 596 KB Output is correct
11 Correct 14 ms 596 KB Output is correct
12 Correct 14 ms 600 KB Output is correct
13 Correct 13 ms 596 KB Output is correct
14 Correct 7 ms 384 KB Output is correct
15 Correct 13 ms 596 KB Output is correct
16 Partially correct 14 ms 612 KB Output is partially correct
17 Correct 7 ms 384 KB Output is correct
18 Correct 12 ms 600 KB Output is correct
19 Correct 14 ms 596 KB Output is correct
20 Correct 13 ms 600 KB Output is correct
21 Correct 13 ms 600 KB Output is correct
22 Correct 14 ms 512 KB Output is correct
23 Correct 13 ms 600 KB Output is correct
24 Correct 7 ms 384 KB Output is correct
25 Partially correct 14 ms 640 KB Output is partially correct
26 Partially correct 14 ms 600 KB Output is partially correct
27 Correct 17 ms 604 KB Output is correct
28 Partially correct 13 ms 600 KB Output is partially correct
29 Correct 15 ms 608 KB Output is correct
30 Correct 13 ms 596 KB Output is correct
31 Correct 15 ms 600 KB Output is correct
32 Partially correct 14 ms 596 KB Output is partially correct
33 Correct 15 ms 600 KB Output is correct
34 Partially correct 15 ms 600 KB Output is partially correct
35 Correct 15 ms 624 KB Output is correct
36 Correct 14 ms 596 KB Output is correct
37 Correct 17 ms 612 KB Output is correct
38 Correct 13 ms 596 KB Output is correct
39 Partially correct 17 ms 736 KB Output is partially correct
40 Correct 19 ms 712 KB Output is correct
41 Correct 17 ms 612 KB Output is correct
42 Correct 17 ms 608 KB Output is correct
43 Partially correct 12 ms 600 KB Output is partially correct
44 Partially correct 13 ms 600 KB Output is partially correct
45 Partially correct 14 ms 600 KB Output is partially correct
46 Correct 13 ms 596 KB Output is correct
47 Partially correct 15 ms 600 KB Output is partially correct
48 Correct 14 ms 596 KB Output is correct
49 Correct 16 ms 604 KB Output is correct
50 Correct 13 ms 600 KB Output is correct
51 Correct 16 ms 596 KB Output is correct
52 Correct 13 ms 600 KB Output is correct
53 Correct 14 ms 600 KB Output is correct
54 Partially correct 12 ms 596 KB Output is partially correct
55 Partially correct 13 ms 600 KB Output is partially correct
56 Partially correct 18 ms 612 KB Output is partially correct
57 Correct 17 ms 612 KB Output is correct
58 Correct 13 ms 600 KB Output is correct
59 Correct 14 ms 600 KB Output is correct
60 Correct 12 ms 596 KB Output is correct
61 Correct 13 ms 600 KB Output is correct
62 Correct 0 ms 256 KB Output is correct
63 Correct 0 ms 256 KB Output is correct
64 Correct 0 ms 256 KB Output is correct
65 Correct 1 ms 256 KB Output is correct
66 Correct 0 ms 256 KB Output is correct
67 Correct 0 ms 256 KB Output is correct
68 Correct 1 ms 256 KB Output is correct
69 Correct 0 ms 256 KB Output is correct
70 Correct 0 ms 256 KB Output is correct
71 Correct 0 ms 256 KB Output is correct
72 Correct 1 ms 256 KB Output is correct
73 Correct 0 ms 256 KB Output is correct
74 Correct 0 ms 256 KB Output is correct
75 Correct 0 ms 256 KB Output is correct
76 Correct 1 ms 256 KB Output is correct
77 Correct 0 ms 256 KB Output is correct
78 Correct 0 ms 256 KB Output is correct
79 Correct 1 ms 256 KB Output is correct
80 Correct 0 ms 256 KB Output is correct
81 Correct 1 ms 256 KB Output is correct
82 Correct 0 ms 256 KB Output is correct
83 Correct 0 ms 256 KB Output is correct
84 Correct 1 ms 256 KB Output is correct
85 Correct 0 ms 256 KB Output is correct
86 Correct 1 ms 256 KB Output is correct
87 Correct 1 ms 256 KB Output is correct
88 Correct 0 ms 256 KB Output is correct
89 Correct 0 ms 256 KB Output is correct
90 Correct 1 ms 256 KB Output is correct
91 Correct 0 ms 256 KB Output is correct