oj.uz

Submission #304079

# Submission time Handle Problem Language Result Execution time Memory
304079 2020-09-21T02:32:00 Z Fdg Counting Mushrooms (IOI20_mushrooms) C++14
25 / 100
 159 ms 4432 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 = 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]);
          --pos;
          v[pos] = arr[0];
          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]);
          --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];
          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]);
          --pos;
          v[pos] = arr[0];
          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]);
          --pos;
          v[pos] = arr[2];
          doNextSimple = true;
        } 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 8 ms 588 KB Output is partially correct
7 Partially correct 71 ms 1400 KB Output is partially correct
8 Partially correct 81 ms 1528 KB Output is partially correct
9 Partially correct 64 ms 1880 KB Output is partially correct
10 Partially correct 105 ms 2552 KB Output is partially correct
11 Partially correct 117 ms 2680 KB Output is partially correct
12 Partially correct 110 ms 2680 KB Output is partially correct
13 Partially correct 80 ms 1784 KB Output is partially correct
14 Partially correct 53 ms 1528 KB Output is partially correct
15 Partially correct 121 ms 2888 KB Output is partially correct
16 Partially correct 113 ms 2680 KB Output is partially correct
17 Partially correct 51 ms 1400 KB Output is partially correct
18 Partially correct 94 ms 1972 KB Output is partially correct
19 Partially correct 114 ms 2780 KB Output is partially correct
20 Partially correct 109 ms 2552 KB Output is partially correct
21 Partially correct 116 ms 2752 KB Output is partially correct
22 Partially correct 113 ms 2680 KB Output is partially correct
23 Partially correct 97 ms 2296 KB Output is partially correct
24 Partially correct 61 ms 2296 KB Output is partially correct
25 Partially correct 123 ms 2764 KB Output is partially correct
26 Partially correct 105 ms 2864 KB Output is partially correct
27 Partially correct 94 ms 2708 KB Output is partially correct
28 Partially correct 115 ms 2680 KB Output is partially correct
29 Partially correct 107 ms 2896 KB Output is partially correct
30 Partially correct 106 ms 2776 KB Output is partially correct
31 Partially correct 116 ms 2808 KB Output is partially correct
32 Partially correct 109 ms 2840 KB Output is partially correct
33 Partially correct 130 ms 4148 KB Output is partially correct
34 Partially correct 127 ms 4216 KB Output is partially correct
35 Partially correct 113 ms 4392 KB Output is partially correct
36 Partially correct 118 ms 4216 KB Output is partially correct
37 Partially correct 122 ms 4216 KB Output is partially correct
38 Partially correct 124 ms 4216 KB Output is partially correct
39 Partially correct 120 ms 4216 KB Output is partially correct
40 Partially correct 118 ms 4220 KB Output is partially correct
41 Partially correct 100 ms 4268 KB Output is partially correct
42 Partially correct 123 ms 4216 KB Output is partially correct
43 Partially correct 119 ms 4220 KB Output is partially correct
44 Partially correct 118 ms 4220 KB Output is partially correct
45 Partially correct 115 ms 4216 KB Output is partially correct
46 Partially correct 130 ms 4336 KB Output is partially correct
47 Partially correct 119 ms 4216 KB Output is partially correct
48 Partially correct 111 ms 4220 KB Output is partially correct
49 Partially correct 140 ms 4264 KB Output is partially correct
50 Partially correct 132 ms 4220 KB Output is partially correct
51 Partially correct 124 ms 4148 KB Output is partially correct
52 Partially correct 120 ms 4216 KB Output is partially correct
53 Partially correct 122 ms 4216 KB Output is partially correct
54 Partially correct 146 ms 4216 KB Output is partially correct
55 Partially correct 159 ms 4344 KB Output is partially correct
56 Partially correct 116 ms 4312 KB Output is partially correct
57 Partially correct 153 ms 4176 KB Output is partially correct
58 Partially correct 117 ms 4220 KB Output is partially correct
59 Partially correct 119 ms 4432 KB Output is partially correct
60 Partially correct 150 ms 4216 KB Output is partially correct
61 Partially correct 121 ms 4216 KB Output is partially correct
62 Correct 1 ms 256 KB Output is correct
63 Correct 0 ms 256 KB Output is correct
64 Correct 1 ms 256 KB Output is correct
65 Correct 0 ms 256 KB Output is correct
66 Correct 0 ms 256 KB Output is correct
67 Correct 1 ms 256 KB Output is correct
68 Correct 1 ms 308 KB Output is correct
69 Correct 1 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 0 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 0 ms 256 KB Output is correct
76 Correct 1 ms 360 KB Output is correct
77 Correct 1 ms 256 KB Output is correct
78 Correct 0 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 1 ms 256 KB Output is correct
83 Correct 0 ms 256 KB Output is correct
84 Correct 0 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 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 0 ms 256 KB Output is correct
91 Correct 0 ms 256 KB Output is correct