oj.uz

Submission #304075

# Submission time Handle Problem Language Result Execution time Memory
304075 2020-09-21T02:28:26 Z Fdg Counting Mushrooms (IOI20_mushrooms) C++14
25 / 100
 150 ms 1664 KB 
#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <algorithm>
#include "mushrooms.h"

using namespace std;

const int VAL = 141;

vector<int> a, b;

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();

  srand(time(NULL));
  vector<int> v;
  for (int i = 1; i < n; ++i)
    v.push_back(i);
  // random_shuffle(v.begin(), v.end());

  int ans = 0, pos = 0;

  bool doNextSimple = false;

  a.push_back(0); found.insert(0);
  while (/*a.size() < VAL && b.size() < VAL && */pos < (int) v.size()) {
    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 = true;
      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]);
          --pos;
          v[pos] = arr[0];
          doNextSimple = true;
        } else if (ret == 2) {
          // process(arr[0], true);
          // process(arr[2], false);
          // process(arr[4], true);
          --pos;
          v[pos] = arr[0];
          --pos;
          v[pos] = arr[4];
          --pos;
          v[pos] = arr[2];
          doNextSimple = true;
        } else if (ret == 1) {
          // process(arr[2], true);
          // diff[arr[0]].push_back(arr[4]);
          // diff[arr[4]].push_back(arr[0]);
          --pos;
          v[pos] = arr[0];
          --pos;
          v[pos] = arr[4];
          --pos;
          v[pos] = arr[2];
          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 = true;
      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]);
          --pos;
          v[pos] = arr[0];
          doNextSimple = true;
        } else if (ret == 2) {
          process(arr[0], false);
          process(arr[2], true);
          process(arr[4], false);
        } else if (ret == 1) {
          process(arr[2], false);
          diff[arr[0]].push_back(arr[4]);
          diff[arr[4]].push_back(arr[0]);
          --pos;
          v[pos] = arr[0];
          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);

  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]);
        if (pos < (int) v.size()) arr.push_back(v[pos]), ++pos, ++used;
        else break;
      }
      int ret = use_machine(arr);
      int diff = (ret / 2) + (ret & 1);
      ans += used - diff;
    }
  } 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]);
        if (pos < (int) v.size()) arr.push_back(v[pos]), ++pos, ++used;
        else break;
      }
      int ret = use_machine(arr);
      int diff = (ret / 2) + (ret & 1);
      ans += diff;
    }
  }

  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; 
// }

Subtask #1
25.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Partially correct 10 ms 384 KB Output is partially correct
7 Partially correct 110 ms 1528 KB Output is partially correct
8 Partially correct 109 ms 1400 KB Output is partially correct
9 Partially correct 107 ms 1576 KB Output is partially correct
10 Partially correct 108 ms 1400 KB Output is partially correct
11 Partially correct 103 ms 1428 KB Output is partially correct
12 Partially correct 107 ms 1400 KB Output is partially correct
13 Partially correct 102 ms 1400 KB Output is partially correct
14 Partially correct 53 ms 888 KB Output is partially correct
15 Partially correct 104 ms 1584 KB Output is partially correct
16 Partially correct 102 ms 1352 KB Output is partially correct
17 Partially correct 49 ms 888 KB Output is partially correct
18 Partially correct 100 ms 1528 KB Output is partially correct
19 Partially correct 106 ms 1400 KB Output is partially correct
20 Partially correct 99 ms 1400 KB Output is partially correct
21 Partially correct 107 ms 1540 KB Output is partially correct
22 Partially correct 110 ms 1400 KB Output is partially correct
23 Partially correct 107 ms 1400 KB Output is partially correct
24 Partially correct 57 ms 888 KB Output is partially correct
25 Partially correct 104 ms 1400 KB Output is partially correct
26 Partially correct 104 ms 1400 KB Output is partially correct
27 Partially correct 150 ms 1400 KB Output is partially correct
28 Partially correct 132 ms 1400 KB Output is partially correct
29 Partially correct 108 ms 1444 KB Output is partially correct
30 Partially correct 105 ms 1400 KB Output is partially correct
31 Partially correct 115 ms 1400 KB Output is partially correct
32 Partially correct 138 ms 1400 KB Output is partially correct
33 Partially correct 126 ms 1400 KB Output is partially correct
34 Partially correct 130 ms 1384 KB Output is partially correct
35 Partially correct 136 ms 1420 KB Output is partially correct
36 Partially correct 88 ms 1580 KB Output is partially correct
37 Partially correct 80 ms 1476 KB Output is partially correct
38 Partially correct 135 ms 1400 KB Output is partially correct
39 Partially correct 129 ms 1528 KB Output is partially correct
40 Partially correct 81 ms 1476 KB Output is partially correct
41 Partially correct 138 ms 1400 KB Output is partially correct
42 Partially correct 100 ms 1664 KB Output is partially correct
43 Partially correct 144 ms 1400 KB Output is partially correct
44 Partially correct 133 ms 1392 KB Output is partially correct
45 Partially correct 144 ms 1400 KB Output is partially correct
46 Partially correct 134 ms 1528 KB Output is partially correct
47 Partially correct 120 ms 1656 KB Output is partially correct
48 Partially correct 115 ms 1400 KB Output is partially correct
49 Partially correct 141 ms 1400 KB Output is partially correct
50 Partially correct 140 ms 1528 KB Output is partially correct
51 Partially correct 109 ms 1400 KB Output is partially correct
52 Partially correct 110 ms 1400 KB Output is partially correct
53 Partially correct 110 ms 1400 KB Output is partially correct
54 Partially correct 109 ms 1400 KB Output is partially correct
55 Partially correct 104 ms 1456 KB Output is partially correct
56 Partially correct 117 ms 1400 KB Output is partially correct
57 Partially correct 103 ms 1444 KB Output is partially correct
58 Partially correct 101 ms 1400 KB Output is partially correct
59 Partially correct 89 ms 1564 KB Output is partially correct
60 Partially correct 109 ms 1536 KB Output is partially correct
61 Partially correct 129 ms 1476 KB Output is partially 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 0 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 1 ms 256 KB Output is correct
72 Correct 1 ms 256 KB Output is correct
73 Correct 1 ms 256 KB Output is correct
74 Correct 0 ms 256 KB Output is correct
75 Correct 1 ms 256 KB Output is correct
76 Correct 0 ms 256 KB Output is correct
77 Correct 0 ms 256 KB Output is correct
78 Correct 1 ms 256 KB Output is correct
79 Correct 0 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 1 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 0 ms 256 KB Output is correct
87 Correct 0 ms 256 KB Output is correct
88 Correct 1 ms 256 KB Output is correct
89 Correct 1 ms 256 KB Output is correct
90 Correct 1 ms 256 KB Output is correct
91 Correct 1 ms 256 KB Output is correct