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Submission #797852

# Submission time Handle Problem Language Result Execution time Memory
797852 2023-07-30T02:58:00 Z boyliguanhan Counting Mushrooms (IOI20_mushrooms) C++17
92.623 / 100
 7 ms 432 KB 
#include "mushrooms.h"
#include<bits/stdc++.h>
using namespace std;
#define X 90
int count_mushrooms(int n) {
	if(n<400) {
        int ans = 0;
        n--;
        for(int i = 1; i <= n/2;i++)
            ans+=use_machine({i*2-1,0,i*2});
        if(n%2) ans+=use_machine({0,n});
        return n+1-ans;
    }
    vector<int> good{0};
    vector<int> other;
    int second = 0;
    if(!use_machine({0,1}))
        second = 1, good.push_back(1);
    else
        other.push_back(1);
    if(!use_machine({0,2}))
        second = 1, good.push_back(2);
    else
        other.push_back(2);
    if(!second)
        swap(good, other);
    for(int i = 3; i < 2*X-1; i+=2) {
        int res = use_machine({i,good[0],i+1,good[1]});
        if(res%2-1)
            good.push_back(i);
        else
            other.push_back(i);
        if(res<2)
            good.push_back(i+1);
        else
            other.push_back(i+1);
    }
    if(good.size()<other.size())
        second=!second, swap(good, other);
    int ans = 0, num = 0;
    for(int i = 2*X-1; i < n;) {
        int r = min(n, i+(int)good.size());
        num+=r-i-1;
        vector<int> v;
        for(int j = i; j < r; j++) {
            v.push_back(j);
            v.push_back(good[j-i]);
        }
        int x = use_machine(v);
        ans+=r-i-1-x/2;
        int sz = good.size();
        if(x%2) other.push_back(i);
        else good.push_back(i);
        i+=sz;
        if(good.size()<other.size())
            second=!second, swap(good, other), ans = num-ans;
    }
    ans+=good.size();
    if(second)
        return ans;
    return n - ans;
}

Subtask #1
92.623 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 5 ms 312 KB Output is correct
8 Correct 5 ms 316 KB Output is correct
9 Correct 5 ms 316 KB Output is correct
10 Correct 6 ms 208 KB Output is correct
11 Partially correct 5 ms 208 KB Output is partially correct
12 Correct 5 ms 208 KB Output is correct
13 Correct 6 ms 208 KB Output is correct
14 Correct 3 ms 324 KB Output is correct
15 Partially correct 5 ms 208 KB Output is partially correct
16 Partially correct 4 ms 324 KB Output is partially correct
17 Correct 3 ms 208 KB Output is correct
18 Correct 5 ms 308 KB Output is correct
19 Partially correct 5 ms 208 KB Output is partially correct
20 Correct 5 ms 208 KB Output is correct
21 Correct 5 ms 320 KB Output is correct
22 Partially correct 5 ms 312 KB Output is partially correct
23 Correct 6 ms 208 KB Output is correct
24 Correct 4 ms 208 KB Output is correct
25 Partially correct 6 ms 312 KB Output is partially correct
26 Partially correct 7 ms 324 KB Output is partially correct
27 Partially correct 5 ms 208 KB Output is partially correct
28 Partially correct 5 ms 208 KB Output is partially correct
29 Partially correct 5 ms 208 KB Output is partially correct
30 Partially correct 5 ms 324 KB Output is partially correct
31 Partially correct 5 ms 324 KB Output is partially correct
32 Partially correct 5 ms 208 KB Output is partially correct
33 Partially correct 5 ms 208 KB Output is partially correct
34 Partially correct 5 ms 308 KB Output is partially correct
35 Partially correct 6 ms 320 KB Output is partially correct
36 Partially correct 7 ms 316 KB Output is partially correct
37 Partially correct 5 ms 208 KB Output is partially correct
38 Partially correct 5 ms 208 KB Output is partially correct
39 Partially correct 5 ms 208 KB Output is partially correct
40 Partially correct 5 ms 320 KB Output is partially correct
41 Partially correct 5 ms 328 KB Output is partially correct
42 Partially correct 6 ms 208 KB Output is partially correct
43 Partially correct 7 ms 312 KB Output is partially correct
44 Partially correct 5 ms 308 KB Output is partially correct
45 Partially correct 7 ms 328 KB Output is partially correct
46 Partially correct 5 ms 320 KB Output is partially correct
47 Partially correct 5 ms 312 KB Output is partially correct
48 Partially correct 6 ms 312 KB Output is partially correct
49 Partially correct 5 ms 324 KB Output is partially correct
50 Partially correct 5 ms 320 KB Output is partially correct
51 Partially correct 5 ms 208 KB Output is partially correct
52 Partially correct 6 ms 208 KB Output is partially correct
53 Partially correct 5 ms 432 KB Output is partially correct
54 Partially correct 7 ms 304 KB Output is partially correct
55 Partially correct 7 ms 208 KB Output is partially correct
56 Partially correct 5 ms 324 KB Output is partially correct
57 Partially correct 5 ms 208 KB Output is partially correct
58 Partially correct 5 ms 208 KB Output is partially correct
59 Partially correct 5 ms 208 KB Output is partially correct
60 Partially correct 4 ms 208 KB Output is partially correct
61 Partially correct 5 ms 320 KB Output is partially correct
62 Correct 0 ms 208 KB Output is correct
63 Correct 0 ms 208 KB Output is correct
64 Correct 0 ms 208 KB Output is correct
65 Correct 0 ms 208 KB Output is correct
66 Correct 0 ms 208 KB Output is correct
67 Correct 0 ms 208 KB Output is correct
68 Correct 0 ms 208 KB Output is correct
69 Correct 0 ms 208 KB Output is correct
70 Correct 0 ms 208 KB Output is correct
71 Correct 0 ms 208 KB Output is correct
72 Correct 0 ms 208 KB Output is correct
73 Correct 1 ms 208 KB Output is correct
74 Correct 0 ms 208 KB Output is correct
75 Correct 0 ms 208 KB Output is correct
76 Correct 0 ms 208 KB Output is correct
77 Correct 0 ms 208 KB Output is correct
78 Correct 0 ms 208 KB Output is correct
79 Correct 0 ms 208 KB Output is correct
80 Correct 0 ms 208 KB Output is correct
81 Correct 0 ms 208 KB Output is correct
82 Correct 0 ms 208 KB Output is correct
83 Correct 1 ms 208 KB Output is correct
84 Correct 0 ms 208 KB Output is correct
85 Correct 0 ms 208 KB Output is correct
86 Correct 0 ms 208 KB Output is correct
87 Correct 0 ms 208 KB Output is correct
88 Correct 0 ms 208 KB Output is correct
89 Correct 0 ms 208 KB Output is correct
90 Correct 0 ms 208 KB Output is correct
91 Correct 0 ms 208 KB Output is correct