oj.uz

Submission #304796

# Submission time Handle Problem Language Result Execution time Memory
304796 2020-09-21T21:01:04 Z Fdg Counting Mushrooms (IOI20_mushrooms) C++14
100 / 100
 10 ms 768 KB 
#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <algorithm>
#include "mushrooms.h"

using namespace std;

const int VAL = 100;

vector<int> a, b;

void process(int x, bool isA) {
  if (isA) a.push_back(x);
  else b.push_back(x);
}

int count_mushrooms(int n) {
  a.clear(); b.clear();

  vector<int> v;
  for (int i = 1; i < n; ++i)
    v.push_back(i);

  int ans = 0, pos = 0;

  a.push_back(0);
  while (a.size() < VAL && b.size() < VAL && pos + 5 <= (int) v.size()) {
    if (a.size() > 2 && b.size() > 1) {
      vector<int> arr;
      arr.push_back(a[0]);
      arr.push_back(v[pos]), ++pos;
      arr.push_back(a[1]);
      arr.push_back(v[pos]), ++pos; 
      arr.push_back(a[2]);
      arr.push_back(v[pos]), ++pos; 

      int ret = use_machine(arr);
      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);
        vector<int> nArr = {b[1], arr[1], b[0], a[0], arr[3], a[1]};
        nArr.push_back(v[pos]), ++pos;
        nArr.push_back(a[2]);
        nArr.push_back(v[pos]), ++pos;

        int cur = use_machine(nArr) - 1;
        process(arr[1], (cur & 4));
        process(arr[3], !(cur & 4));
        process(nArr[6], !(cur & 2));
        process(nArr[8], !(cur & 1));
      } else if (ret == 2) {
        process(arr[5], true);
        vector<int> nArr = {b[1], arr[1], b[0], a[0], arr[3], a[1]};
        nArr.push_back(v[pos]), ++pos;
        nArr.push_back(a[2]);
        nArr.push_back(v[pos]), ++pos;

        int cur = use_machine(nArr) - 1;
        process(arr[1], (cur & 4));
        process(arr[3], !(cur & 4));
        process(nArr[6], !(cur & 2));
        process(nArr[8], !(cur & 1));
      } 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 && a.size() > 1) {
      vector<int> arr;
      arr.push_back(b[0]);
      arr.push_back(v[pos]), ++pos;
      arr.push_back(b[1]);
      arr.push_back(v[pos]), ++pos; 
      arr.push_back(b[2]);
      arr.push_back(v[pos]), ++pos; 

      int ret = use_machine(arr);
      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);
        vector<int> nArr = {a[1], arr[1], a[0], b[0], arr[3], b[1]};
        nArr.push_back(v[pos]), ++pos;
        nArr.push_back(b[2]);
        nArr.push_back(v[pos]), ++pos;

        int cur = use_machine(nArr) - 1;
        process(arr[1], !(cur & 4));
        process(arr[3], (cur & 4));
        process(nArr[6], (cur & 2));
        process(nArr[8], (cur & 1));
      } else if (ret == 2) {
        process(arr[5], false);
        vector<int> nArr = {a[1], arr[1], a[0], b[0], arr[3], b[1]};
        nArr.push_back(v[pos]), ++pos;
        nArr.push_back(b[2]);
        nArr.push_back(v[pos]), ++pos;
      
        int cur = use_machine(nArr) - 1;
        process(arr[1], !(cur & 4));
        process(arr[3], (cur & 4));
        process(nArr[6], (cur & 2));
        process(nArr[8], (cur & 1));
      } 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;
      arr.push_back(v[pos]), ++pos;
      arr.push_back(a[0]);
      arr.push_back(v[pos]), ++pos;
      arr.push_back(a[1]); 
 
      int ret = use_machine(arr);
      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 (b.size() > 1) {
      vector<int> arr;
      arr.push_back(v[pos]), ++pos;
      arr.push_back(b[0]);
      arr.push_back(v[pos]), ++pos;
      arr.push_back(b[1]); 
 
      int ret = use_machine(arr);
      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 {
      vector<int> arr = {a[0]};
      arr.push_back(v[pos]), ++pos;

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

  ans = a.size();
  while (pos < (int) v.size()) {
    if (a.size() >= b.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;
      if (ret & 1) {
        b.push_back(arr.back());
      } else {
        a.push_back(arr.back());
      }
    } else {
      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;
      if (ret & 1) {
        a.push_back(arr.back());
      } else {
        b.push_back(arr.back());
      }
    }
  }

  return ans;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory 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 0 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 7 ms 512 KB Output is correct
8 Correct 9 ms 512 KB Output is correct
9 Correct 7 ms 512 KB Output is correct
10 Correct 6 ms 512 KB Output is correct
11 Correct 7 ms 512 KB Output is correct
12 Correct 7 ms 512 KB Output is correct
13 Correct 7 ms 512 KB Output is correct
14 Correct 4 ms 384 KB Output is correct
15 Correct 9 ms 512 KB Output is correct
16 Correct 10 ms 512 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 7 ms 512 KB Output is correct
19 Correct 7 ms 512 KB Output is correct
20 Correct 7 ms 512 KB Output is correct
21 Correct 7 ms 512 KB Output is correct
22 Correct 7 ms 512 KB Output is correct
23 Correct 9 ms 512 KB Output is correct
24 Correct 4 ms 384 KB Output is correct
25 Correct 7 ms 512 KB Output is correct
26 Correct 7 ms 512 KB Output is correct
27 Correct 8 ms 512 KB Output is correct
28 Correct 7 ms 512 KB Output is correct
29 Correct 7 ms 512 KB Output is correct
30 Correct 7 ms 512 KB Output is correct
31 Correct 10 ms 512 KB Output is correct
32 Correct 9 ms 512 KB Output is correct
33 Correct 10 ms 512 KB Output is correct
34 Correct 7 ms 512 KB Output is correct
35 Correct 10 ms 512 KB Output is correct
36 Correct 6 ms 768 KB Output is correct
37 Correct 7 ms 512 KB Output is correct
38 Correct 7 ms 512 KB Output is correct
39 Correct 7 ms 512 KB Output is correct
40 Correct 7 ms 512 KB Output is correct
41 Correct 10 ms 512 KB Output is correct
42 Correct 8 ms 512 KB Output is correct
43 Correct 8 ms 512 KB Output is correct
44 Correct 9 ms 512 KB Output is correct
45 Correct 7 ms 512 KB Output is correct
46 Correct 7 ms 512 KB Output is correct
47 Correct 7 ms 512 KB Output is correct
48 Correct 7 ms 512 KB Output is correct
49 Correct 8 ms 512 KB Output is correct
50 Correct 7 ms 512 KB Output is correct
51 Correct 10 ms 512 KB Output is correct
52 Correct 10 ms 512 KB Output is correct
53 Correct 8 ms 512 KB Output is correct
54 Correct 8 ms 512 KB Output is correct
55 Correct 7 ms 512 KB Output is correct
56 Correct 7 ms 512 KB Output is correct
57 Correct 7 ms 512 KB Output is correct
58 Correct 7 ms 512 KB Output is correct
59 Correct 7 ms 512 KB Output is correct
60 Correct 7 ms 512 KB Output is correct
61 Correct 9 ms 512 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 0 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 1 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 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 0 ms 256 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 1 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 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 0 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