Submission #1115686

#TimeUsernameProblemLanguageResultExecution timeMemory
1115686NumberzCounting Mushrooms (IOI20_mushrooms)C++14
Compilation error
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; #define ll long long int count_cocaine(int n) { vector<int> A_count = {0}; vector<int> B_count; int total = 1; // Handle small cases directly if (n <= 90) { int sum = 1; for (int i = 1; i < n; i++) { if (use_machine({0, i}) == 0) sum++; } return sum; } // Initial partitioning for (int i = 1; i <= 2; i++) { if (use_machine({0, i}) == 0) { A_count.push_back(i); total++; } else { B_count.push_back(i); } } // Efficiently partition the first 88 elements for (int j = 3; j < 88; j += 2) { int sum; if (A_count.size() > 1) { sum = use_machine({j, 0, j + 1, A_count[1]}); } else { sum = use_machine({j, B_count[0], j + 1, B_count[1]}); } if (sum == 3) { B_count.push_back(j); B_count.push_back(j + 1); } else if (sum == 2) { A_count.push_back(j); B_count.push_back(j + 1); total++; } else if (sum == 1) { B_count.push_back(j); A_count.push_back(j + 1); total++; } else { A_count.push_back(j); A_count.push_back(j + 1); total += 2; } } // Process remaining elements int i = 89; while (i < n) { vector<int> temp; int d = 0; // Use the smaller group to minimize calls if (A_count.size() >= B_count.size()) { while (i < n && d < A_count.size()) { temp.push_back(i); temp.push_back(A_count[d]); i++; d++; } int sum = use_machine(temp); if (sum % 2 == 1) { B_count.push_back(temp[0]); } else { A_count.push_back(temp[0]); } total += (temp.size() / 2 - ((sum + 1) / 2)); } else { while (i < n && d < B_count.size()) { temp.push_back(i); temp.push_back(B_count[d]); i++; d++; } int sum = use_machine(temp); if (sum % 2 == 1) { A_count.push_back(temp[0]); } else { B_count.push_back(temp[0]); } total += ((sum + 1) / 2); } } return total; }

Compilation message (stderr)

mushrooms.cpp: In function 'int count_cocaine(int)':
mushrooms.cpp:14:17: error: 'use_machine' was not declared in this scope
   14 |             if (use_machine({0, i}) == 0) sum++;
      |                 ^~~~~~~~~~~
mushrooms.cpp:21:13: error: 'use_machine' was not declared in this scope
   21 |         if (use_machine({0, i}) == 0) {
      |             ^~~~~~~~~~~
mushrooms.cpp:33:19: error: 'use_machine' was not declared in this scope
   33 |             sum = use_machine({j, 0, j + 1, A_count[1]});
      |                   ^~~~~~~~~~~
mushrooms.cpp:35:19: error: 'use_machine' was not declared in this scope
   35 |             sum = use_machine({j, B_count[0], j + 1, B_count[1]});
      |                   ^~~~~~~~~~~
mushrooms.cpp:64:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |             while (i < n && d < A_count.size()) {
      |                             ~~^~~~~~~~~~~~~~~~
mushrooms.cpp:70:23: error: 'use_machine' was not declared in this scope
   70 |             int sum = use_machine(temp);
      |                       ^~~~~~~~~~~
mushrooms.cpp:78:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |             while (i < n && d < B_count.size()) {
      |                             ~~^~~~~~~~~~~~~~~~
mushrooms.cpp:84:23: error: 'use_machine' was not declared in this scope
   84 |             int sum = use_machine(temp);
      |                       ^~~~~~~~~~~