Submission #484949

#	Time	Username	Problem	Language	Result	Execution time	Memory
484949		M4mou	Counting Mushrooms (IOI20_mushrooms)	C++17	Compilation error	0 ms	0 KiB

mushrooms

#include <bits/stdc++.h>
#pragma GCC optimize ("Ofast")
#pragma GCC target ("avx2")

        using namespace std;

        using ll  = long long;
        using vi  = vector<int>;

        #define pb push_back
        #define ff first
        #define ss second
        #define lb lower_bound
        #define all(x) (x).begin() , (x).end()
        

        //int use_machine(vector<int> a);

        int count_mushrooms(int n) {
            int cnt = 1;
            int k = 210;
            vector<int>arrA, arrB;
            for(int i = 1;i<k;i++){
                vector<int> a;
                a = {0, i};
                if(use_machine(a)) arrB.pb(i);
                else arrA.pb(i);
            }
            #define sz(x) (int)x.size()
            if(sz(arrA) >= sz(arrB)) {
                int i = k;
                while(i<n){
                    vector<int> a;
                    for(int j : arrA){
                        a.pb(j);
                        a.pb(i);
                        i++;
                        if(i == n)break;
                    }
                    int x = use_machine(a);
                    cnt += (int)a.size() - (x+1)/2;
                }
            }
            else {
                int i = k;
                while(i<n){
                    vector<int> b;
                    for(int j : arrB){
                        b.pb(j);
                        b.pb(i);
                        i++;
                        if(i == n)break;
                    }
                    int x = use_machine(b);
                    cnt += (x+1)/2;
                }
            }
            return cnt;
        
        }

Compilation message (stderr)

mushrooms.cpp: In function 'int count_mushrooms(int)':
mushrooms.cpp:26:20: error: 'use_machine' was not declared in this scope
   26 |                 if(use_machine(a)) arrB.pb(i);
      |                    ^~~~~~~~~~~
mushrooms.cpp:40:29: error: 'use_machine' was not declared in this scope
   40 |                     int x = use_machine(a);
      |                             ^~~~~~~~~~~
mushrooms.cpp:54:29: error: 'use_machine' was not declared in this scope
   54 |                     int x = use_machine(b);
      |                             ^~~~~~~~~~~