oj.uz

Submission #1105693

# Submission time Handle Problem Language Result Execution time Memory
1105693 2024-10-27T10:50:12 Z azberjibiou Counting Mushrooms (IOI20_mushrooms) C++17
25 / 100
 95 ms 1052 KB 
#include "mushrooms.h"
#include <bits/stdc++.h>
#define all(v) v.begin(), v.end()
#define pb push_back
#define lb lower_bound
#define gibon ios::sync_with_stdio(false); cin.tie(0);
#define fi first
#define se second
#define pii pair<int, int>
#define pll pair<ll, ll>
typedef long long ll;
using namespace std;
const int mxN=505;
const int mxM=2200005;
const int mxK=61;
const int MOD=1e9+7;
const ll INF=1e18;
const int C=200000;
vector <int> A, B;
int cntA;
int idx=1;
void check_one(){
    int val=use_machine(vector <int>{0, idx});
    if(val==0) A.push_back(idx);
    else B.push_back(idx);
    idx++;
}
void check_two(){
    assert(A.size()>=2 || B.size()>=2);
    bool swp=false;
    if(A.size()<2){
        swp=true;
        swap(A, B);
    }
    int val=use_machine(vector <int> {A[0], idx, A[1], idx+1});
    if(val%2==1) B.push_back(idx+1);
    else A.push_back(idx+1);
    if(val>=2) B.push_back(idx);
    else A.push_back(idx);
    idx+=2;
    if(swp) swap(A, B);
}
void check_C(){
    bool swp=false;
    if(A.size()<B.size()){
        swp=true;
        swap(A, B);
    }
    vector <int> v;
    for(int i=0;i<A.size();i++){
        v.push_back(A[i]);
        v.push_back(idx+i);
    }
    int val=use_machine(v);
    int sz=A.size();
    //end element
    if(val%2==0) A.push_back(idx+sz-1);
    else B.push_back(idx+sz-1);
    //middle element
    if(swp) cntA+=val/2;
    else cntA+=sz-1-val/2;
    //maintain idx, A, B
    idx+=sz;
    if(swp) swap(A, B);
}
void check_end(int n){
    bool swp=false;
    if(A.size()<B.size()){
        swp=true;
        swap(A, B);
    }
    vector <int> v;
    for(int i=0;i<A.size();i++){
        v.push_back(A[i]);
        if(idx+i<n) v.push_back(idx+i);
    }
    int val=use_machine(v);
    int sz=A.size(), cnt_mid=max(n-idx, sz-1);
    if(val%2==0) A.push_back(idx+sz-1);
    else B.push_back(idx+sz-1);
    if(swp) cntA+=val/2;
    else cntA+=cnt_mid-val/2;
    if(swp) swap(A, B);
}
int count_mushrooms(int n) {
    A.push_back(0);
    check_one();
    if(n==2) return A.size();
    if(A.size()==1) check_one();
    while(A.size()<C && B.size()<C){
        if(idx==n) return A.size();
        else if(idx==n-1) check_one();
        else check_two();
    }
    while(idx<n){
        if(n-idx<=max(A.size(), B.size())) check_end(n);
        else check_C();
    }
    return A.size()+cntA;
}

Compilation message

mushrooms.cpp: In function 'void check_C()':
mushrooms.cpp:50:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |     for(int i=0;i<A.size();i++){
      |                 ~^~~~~~~~~
mushrooms.cpp: In function 'void check_end(int)':
mushrooms.cpp:73:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |     for(int i=0;i<A.size();i++){
      |                 ~^~~~~~~~~
mushrooms.cpp: In function 'int count_mushrooms(int)':
mushrooms.cpp:96:17: warning: comparison of integer expressions of different signedness: 'int' and 'const long unsigned int' [-Wsign-compare]
   96 |         if(n-idx<=max(A.size(), B.size())) check_end(n);
      |            ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
25.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 504 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Partially correct 7 ms 336 KB Output is partially correct
7 Partially correct 80 ms 740 KB Output is partially correct
8 Partially correct 69 ms 808 KB Output is partially correct
9 Partially correct 76 ms 804 KB Output is partially correct
10 Partially correct 69 ms 968 KB Output is partially correct
11 Partially correct 75 ms 584 KB Output is partially correct
12 Partially correct 87 ms 776 KB Output is partially correct
13 Partially correct 83 ms 752 KB Output is partially correct
14 Partially correct 39 ms 488 KB Output is partially correct
15 Partially correct 77 ms 720 KB Output is partially correct
16 Partially correct 78 ms 752 KB Output is partially correct
17 Partially correct 34 ms 704 KB Output is partially correct
18 Partially correct 72 ms 756 KB Output is partially correct
19 Partially correct 69 ms 584 KB Output is partially correct
20 Partially correct 74 ms 840 KB Output is partially correct
21 Partially correct 81 ms 768 KB Output is partially correct
22 Partially correct 68 ms 584 KB Output is partially correct
23 Partially correct 68 ms 1008 KB Output is partially correct
24 Partially correct 38 ms 848 KB Output is partially correct
25 Partially correct 81 ms 1052 KB Output is partially correct
26 Partially correct 72 ms 592 KB Output is partially correct
27 Partially correct 81 ms 592 KB Output is partially correct
28 Partially correct 70 ms 520 KB Output is partially correct
29 Partially correct 87 ms 496 KB Output is partially correct
30 Partially correct 77 ms 1020 KB Output is partially correct
31 Partially correct 89 ms 660 KB Output is partially correct
32 Partially correct 74 ms 776 KB Output is partially correct
33 Partially correct 73 ms 640 KB Output is partially correct
34 Partially correct 63 ms 600 KB Output is partially correct
35 Partially correct 65 ms 708 KB Output is partially correct
36 Partially correct 84 ms 1048 KB Output is partially correct
37 Partially correct 74 ms 712 KB Output is partially correct
38 Partially correct 76 ms 488 KB Output is partially correct
39 Partially correct 79 ms 616 KB Output is partially correct
40 Partially correct 70 ms 856 KB Output is partially correct
41 Partially correct 72 ms 744 KB Output is partially correct
42 Partially correct 86 ms 756 KB Output is partially correct
43 Partially correct 60 ms 744 KB Output is partially correct
44 Partially correct 76 ms 704 KB Output is partially correct
45 Partially correct 71 ms 780 KB Output is partially correct
46 Partially correct 74 ms 968 KB Output is partially correct
47 Partially correct 66 ms 724 KB Output is partially correct
48 Partially correct 71 ms 712 KB Output is partially correct
49 Partially correct 63 ms 840 KB Output is partially correct
50 Partially correct 74 ms 856 KB Output is partially correct
51 Partially correct 71 ms 712 KB Output is partially correct
52 Partially correct 72 ms 724 KB Output is partially correct
53 Partially correct 68 ms 492 KB Output is partially correct
54 Partially correct 68 ms 712 KB Output is partially correct
55 Partially correct 74 ms 752 KB Output is partially correct
56 Partially correct 71 ms 772 KB Output is partially correct
57 Partially correct 95 ms 740 KB Output is partially correct
58 Partially correct 76 ms 700 KB Output is partially correct
59 Partially correct 91 ms 464 KB Output is partially correct
60 Partially correct 73 ms 616 KB Output is partially correct
61 Partially correct 66 ms 520 KB Output is partially correct
62 Correct 1 ms 336 KB Output is correct
63 Correct 1 ms 336 KB Output is correct
64 Correct 1 ms 336 KB Output is correct
65 Correct 1 ms 336 KB Output is correct
66 Correct 1 ms 336 KB Output is correct
67 Correct 1 ms 336 KB Output is correct
68 Correct 1 ms 336 KB Output is correct
69 Correct 1 ms 336 KB Output is correct
70 Correct 1 ms 336 KB Output is correct
71 Correct 1 ms 336 KB Output is correct
72 Correct 1 ms 336 KB Output is correct
73 Correct 1 ms 336 KB Output is correct
74 Correct 1 ms 336 KB Output is correct
75 Correct 1 ms 336 KB Output is correct
76 Correct 1 ms 336 KB Output is correct
77 Correct 1 ms 336 KB Output is correct
78 Correct 1 ms 336 KB Output is correct
79 Correct 1 ms 336 KB Output is correct
80 Correct 1 ms 336 KB Output is correct
81 Correct 1 ms 336 KB Output is correct
82 Correct 1 ms 336 KB Output is correct
83 Correct 1 ms 336 KB Output is correct
84 Correct 1 ms 336 KB Output is correct
85 Correct 1 ms 336 KB Output is correct
86 Correct 1 ms 336 KB Output is correct
87 Correct 1 ms 336 KB Output is correct
88 Correct 1 ms 336 KB Output is correct
89 Correct 1 ms 336 KB Output is correct
90 Correct 1 ms 336 KB Output is correct
91 Correct 1 ms 336 KB Output is correct