oj.uz

Submission #661227

# Submission time Handle Problem Language Result Execution time Memory
661227 2022-11-25T01:14:11 Z perchuts Counting Mushrooms (IOI20_mushrooms) C++17
92.623 / 100
 10 ms 340 KB 
#include <bits/stdc++.h>

#define all(x) x.begin(), x.end()
#define sz(x) (int) x.size()
#define endl '\n'
#define pb push_back
#define _ ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#include "mushrooms.h"
using namespace std;

template<typename X,typename Y> bool ckmin(X& x,Y y){return (x>y?x=y,1:0);}

using ii = pair<int,int>;

int use_machine(vector<int> x);

int count_mushrooms(int n){
    vector<int>m;
    vector<vector<int>>v(2,vector<int>());

    int k = (n<=500?100:88), x, y, type = 0;
    
    if(n<=226){ 
        int ans = 1;
        for(int i=1;i<n;++i)ans += (1 - use_machine({0,i}));
        return ans;
    }

    v[0].pb(0);

    int r1 = use_machine({0,1}), r2 = use_machine({0,2});

    if(r1)v[1].pb(1);
    else v[0].pb(1);

    if(r2)v[1].pb(2);
    else v[0].pb(2);


    if(!r1)x = 0, y = 1;
    else if(!r2)x = 0, y = 2;    
    else x = 1, y = 2, type = 1;

    for(int i=3;i<2*k-1;i+=2){
        assert(i+1<n);
        int cur = use_machine({i,x,i+1,y});

        if(cur&1)v[type^1].pb(i);
        else v[type].pb(i);

        if(cur>=2)v[type^1].pb(i+1);
        else v[type].pb(i+1);
    }

    //deve dar uns 80 pontos

    int target = (sz(v[0])>=k?0:1), ans = sz(v[0]);

    for(int i=2*k-1;i<n;i+=k){
        
        if(sz(v[target^1])>sz(v[target]))target ^= 1;
        k = sz(v[target]);

        vector<int>ask;
        for(int j=0;j<k&&i+j<n;++j){
            ask.pb(i+j), ask.pb(v[target][j]);
        }

        int cur = use_machine(ask);

        if(cur&1)v[target^1].pb(i);
        else v[target].pb(i);

        if(target==1)ans += (cur+1)/2;
        else ans += min(n-i,k) - (cur+1)/2;
    }

    return ans;
}

Subtask #1
92.623 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 2 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 7 ms 208 KB Output is correct
8 Correct 5 ms 208 KB Output is correct
9 Correct 5 ms 304 KB Output is correct
10 Correct 6 ms 208 KB Output is correct
11 Partially correct 6 ms 208 KB Output is partially correct
12 Correct 5 ms 308 KB Output is correct
13 Correct 5 ms 208 KB Output is correct
14 Correct 3 ms 208 KB Output is correct
15 Partially correct 8 ms 208 KB Output is partially correct
16 Partially correct 10 ms 328 KB Output is partially correct
17 Correct 3 ms 208 KB Output is correct
18 Correct 7 ms 208 KB Output is correct
19 Partially correct 6 ms 208 KB Output is partially correct
20 Correct 5 ms 208 KB Output is correct
21 Correct 5 ms 304 KB Output is correct
22 Partially correct 7 ms 208 KB Output is partially correct
23 Correct 5 ms 208 KB Output is correct
24 Correct 5 ms 316 KB Output is correct
25 Partially correct 5 ms 332 KB Output is partially correct
26 Partially correct 5 ms 308 KB Output is partially correct
27 Partially correct 6 ms 208 KB Output is partially correct
28 Partially correct 8 ms 208 KB Output is partially correct
29 Partially correct 6 ms 336 KB Output is partially correct
30 Partially correct 6 ms 312 KB Output is partially correct
31 Partially correct 6 ms 324 KB Output is partially correct
32 Partially correct 7 ms 328 KB Output is partially correct
33 Partially correct 6 ms 332 KB Output is partially correct
34 Partially correct 8 ms 208 KB Output is partially correct
35 Partially correct 6 ms 208 KB Output is partially correct
36 Partially correct 6 ms 208 KB Output is partially correct
37 Partially correct 6 ms 336 KB Output is partially correct
38 Partially correct 8 ms 332 KB Output is partially correct
39 Partially correct 9 ms 320 KB Output is partially correct
40 Partially correct 6 ms 208 KB Output is partially correct
41 Partially correct 7 ms 340 KB Output is partially correct
42 Partially correct 6 ms 336 KB Output is partially correct
43 Partially correct 6 ms 208 KB Output is partially correct
44 Partially correct 6 ms 328 KB Output is partially correct
45 Partially correct 10 ms 312 KB Output is partially correct
46 Partially correct 5 ms 328 KB Output is partially correct
47 Partially correct 8 ms 324 KB Output is partially correct
48 Partially correct 6 ms 336 KB Output is partially correct
49 Partially correct 7 ms 324 KB Output is partially correct
50 Partially correct 6 ms 208 KB Output is partially correct
51 Partially correct 6 ms 316 KB Output is partially correct
52 Partially correct 6 ms 312 KB Output is partially correct
53 Partially correct 6 ms 316 KB Output is partially correct
54 Partially correct 6 ms 324 KB Output is partially correct
55 Partially correct 6 ms 332 KB Output is partially correct
56 Partially correct 6 ms 208 KB Output is partially correct
57 Partially correct 6 ms 320 KB Output is partially correct
58 Partially correct 8 ms 336 KB Output is partially correct
59 Partially correct 5 ms 332 KB Output is partially correct
60 Partially correct 8 ms 320 KB Output is partially correct
61 Partially correct 6 ms 208 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 1 ms 208 KB Output is correct
65 Correct 0 ms 208 KB Output is correct
66 Correct 1 ms 208 KB Output is correct
67 Correct 1 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 0 ms 208 KB Output is correct
74 Correct 0 ms 208 KB Output is correct
75 Correct 1 ms 208 KB Output is correct
76 Correct 1 ms 208 KB Output is correct
77 Correct 1 ms 208 KB Output is correct
78 Correct 0 ms 208 KB Output is correct
79 Correct 1 ms 208 KB Output is correct
80 Correct 0 ms 208 KB Output is correct
81 Correct 0 ms 220 KB Output is correct
82 Correct 0 ms 208 KB Output is correct
83 Correct 0 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 1 ms 208 KB Output is correct
90 Correct 0 ms 208 KB Output is correct
91 Correct 1 ms 208 KB Output is correct