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Submission #1079783

# Submission time Handle Problem Language Result Execution time Memory
1079783 2024-08-29T01:35:22 Z HD1 Counting Mushrooms (IOI20_mushrooms) C++14
56.927 / 100
 8 ms 600 KB 
#include "mushrooms.h"
#include <vector>
#include <iostream>
using namespace std;

int count_mushrooms(int n) {
    if(n < 100){
        int res = 1;
        for(int i = 2; i <= n;i++){
            int ans = use_machine({0,i-1});
            res += 1 - ans;
        }
        return res;
    }
    int k = -1,mini = 1e9;
    for(int i = 1; i < n; i++){
        int v = 2*i + ( n - (2*i + 1 ) +i)/(i+1);
        if(mini > v) mini = v, k = i;
    }
    vector<int> A,B;
    A.push_back(1);
    for(int i = 2; i <= 2*k + 1;i++){
        int ans = use_machine({0,i-1});
        if(ans == 0) A.push_back(i);
        else B.push_back(i);
    }
//    cout << k << endl;
    bool isA = true;
    int res = A.size();
    if(B.size() > A.size()) swap(A,B), isA = false;
    

    for(int i = 1; i <= ( n - (2*k + 1 ) +k)/(k+1); i++){
        int ini = 2*k+2 + (i-1)*(k+1) ;
        int fin = min(n+1, 2*k+2 + (i)*(k+1));
        vector<int> q;
//        cout <<  ini << " " << fin << endl;

        for(int j = ini; j < fin; j++){
            q.push_back(j-1);
            q.push_back(A[j-ini]-1);
        }
        
        int ans = use_machine(q);
        if(ans&1) ans = 1 + ans/2;
        else ans = ans/2;
        res += ( isA ? fin-ini-ans : ans);
        //cout << "RES: "<< res << " " << ans << endl;
    }

    //  A A B A B A -> 5 -> 2
    //  B A A A A A -> 1 -> 1 + 1/1
    //  p A p A p A ->  x -> x/2 - 
    // -> 1 +  x/2

//    cout << res << endl;
    // 1 query tenemos que un valr i -> i+1 tipos -> 2*i  -> i+1 del mismo tipo 
    // n/(i+2)  

    return res;
}

Subtask #1
56.927 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Partially correct 6 ms 344 KB Output is partially correct
8 Partially correct 7 ms 344 KB Output is partially correct
9 Partially correct 4 ms 344 KB Output is partially correct
10 Partially correct 4 ms 344 KB Output is partially correct
11 Partially correct 4 ms 344 KB Output is partially correct
12 Partially correct 7 ms 344 KB Output is partially correct
13 Partially correct 4 ms 344 KB Output is partially correct
14 Partially correct 3 ms 344 KB Output is partially correct
15 Partially correct 5 ms 344 KB Output is partially correct
16 Partially correct 5 ms 344 KB Output is partially correct
17 Partially correct 3 ms 340 KB Output is partially correct
18 Partially correct 5 ms 344 KB Output is partially correct
19 Partially correct 6 ms 344 KB Output is partially correct
20 Partially correct 6 ms 440 KB Output is partially correct
21 Partially correct 5 ms 344 KB Output is partially correct
22 Partially correct 7 ms 344 KB Output is partially correct
23 Partially correct 4 ms 344 KB Output is partially correct
24 Partially correct 3 ms 344 KB Output is partially correct
25 Partially correct 4 ms 344 KB Output is partially correct
26 Partially correct 4 ms 344 KB Output is partially correct
27 Partially correct 4 ms 344 KB Output is partially correct
28 Partially correct 4 ms 344 KB Output is partially correct
29 Partially correct 4 ms 344 KB Output is partially correct
30 Partially correct 7 ms 344 KB Output is partially correct
31 Partially correct 4 ms 344 KB Output is partially correct
32 Partially correct 4 ms 344 KB Output is partially correct
33 Partially correct 4 ms 344 KB Output is partially correct
34 Partially correct 4 ms 344 KB Output is partially correct
35 Partially correct 4 ms 344 KB Output is partially correct
36 Partially correct 4 ms 344 KB Output is partially correct
37 Partially correct 6 ms 344 KB Output is partially correct
38 Partially correct 6 ms 344 KB Output is partially correct
39 Partially correct 7 ms 344 KB Output is partially correct
40 Partially correct 4 ms 344 KB Output is partially correct
41 Partially correct 5 ms 344 KB Output is partially correct
42 Partially correct 5 ms 344 KB Output is partially correct
43 Partially correct 5 ms 344 KB Output is partially correct
44 Partially correct 4 ms 344 KB Output is partially correct
45 Partially correct 4 ms 344 KB Output is partially correct
46 Partially correct 4 ms 344 KB Output is partially correct
47 Partially correct 4 ms 344 KB Output is partially correct
48 Partially correct 4 ms 344 KB Output is partially correct
49 Partially correct 4 ms 344 KB Output is partially correct
50 Partially correct 8 ms 344 KB Output is partially correct
51 Partially correct 4 ms 344 KB Output is partially correct
52 Partially correct 6 ms 600 KB Output is partially correct
53 Partially correct 5 ms 344 KB Output is partially correct
54 Partially correct 4 ms 344 KB Output is partially correct
55 Partially correct 5 ms 344 KB Output is partially correct
56 Partially correct 6 ms 344 KB Output is partially correct
57 Partially correct 5 ms 344 KB Output is partially correct
58 Partially correct 4 ms 344 KB Output is partially correct
59 Partially correct 7 ms 344 KB Output is partially correct
60 Partially correct 6 ms 344 KB Output is partially correct
61 Partially correct 6 ms 344 KB Output is partially correct
62 Correct 0 ms 344 KB Output is correct
63 Correct 0 ms 344 KB Output is correct
64 Correct 0 ms 344 KB Output is correct
65 Correct 0 ms 344 KB Output is correct
66 Correct 0 ms 344 KB Output is correct
67 Correct 0 ms 344 KB Output is correct
68 Correct 0 ms 344 KB Output is correct
69 Correct 0 ms 344 KB Output is correct
70 Correct 1 ms 344 KB Output is correct
71 Correct 0 ms 344 KB Output is correct
72 Correct 0 ms 344 KB Output is correct
73 Correct 0 ms 344 KB Output is correct
74 Correct 0 ms 344 KB Output is correct
75 Correct 0 ms 344 KB Output is correct
76 Correct 1 ms 344 KB Output is correct
77 Correct 0 ms 344 KB Output is correct
78 Correct 1 ms 344 KB Output is correct
79 Correct 0 ms 344 KB Output is correct
80 Correct 0 ms 344 KB Output is correct
81 Correct 0 ms 344 KB Output is correct
82 Correct 1 ms 344 KB Output is correct
83 Correct 0 ms 344 KB Output is correct
84 Correct 0 ms 344 KB Output is correct
85 Correct 0 ms 344 KB Output is correct
86 Correct 1 ms 344 KB Output is correct
87 Correct 0 ms 344 KB Output is correct
88 Correct 1 ms 344 KB Output is correct
89 Correct 0 ms 344 KB Output is correct
90 Correct 0 ms 344 KB Output is correct
91 Correct 0 ms 344 KB Output is correct