Submission #1117305

#TimeUsernameProblemLanguageResultExecution timeMemory
1117305pokmui9909Counting Mushrooms (IOI20_mushrooms)C++17
80.43 / 100
9 ms592 KiB
#include "mushrooms.h" #include <bits/stdc++.h> using namespace std; using ll = long long; #define x first #define y second int count_mushrooms(int N){ ll B = min(N, 141), S = 1; vector<ll> P, Q; P.push_back(0); while(S < N && P.size() < B && Q.size() < B){ if(S + 1 < N && P.size() >= 2){ ll f = use_machine((vector<int>){P[0], S, P[1], S + 1}); if(f / 2 == 0){ P.push_back(S); } else { Q.push_back(S); } if(f % 2 == 0){ P.push_back(S + 1); } else { Q.push_back(S + 1); } S += 2; } else if(S + 1 < N && Q.size() >= 2){ ll f = use_machine((vector<int>){Q[0], S, Q[1], S + 1}); if(f / 2 == 1){ P.push_back(S); } else { Q.push_back(S); } if(f % 2 == 1){ P.push_back(S + 1); } else { Q.push_back(S + 1); } S += 2; } else { ll f = use_machine((vector<int>){0, S}); if(f == 0){ P.push_back(S); } else { Q.push_back(S); } S++; } } B = max(P.size(), Q.size()); ll Rev = 0; if(Q.size() == B){ Rev = 1; swap(P, Q); } ll Ans = P.size(); for(ll i = S; i < N; i += B){ vector<int> V; for(ll j = 0; j < B; j++){ if(i + j >= N) break; V.push_back(P[j]); V.push_back(i + j); Ans++; } ll t = use_machine(V); Ans -= (t / 2) + (t % 2); } return (Rev == 0 ? Ans : N - Ans); }

Compilation message (stderr)

mushrooms.cpp: In function 'int count_mushrooms(int)':
mushrooms.cpp:13:29: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   13 |     while(S < N && P.size() < B && Q.size() < B){
      |                    ~~~~~~~~~^~~
mushrooms.cpp:13:45: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   13 |     while(S < N && P.size() < B && Q.size() < B){
      |                                    ~~~~~~~~~^~~
mushrooms.cpp:15:66: warning: narrowing conversion of 'P.std::vector<long long int>::operator[](0)' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
   15 |             ll f = use_machine((vector<int>){P[0], S, P[1], S + 1});
      |                                                                  ^
mushrooms.cpp:15:66: warning: narrowing conversion of 'P.std::vector<long long int>::operator[](0)' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
mushrooms.cpp:15:52: warning: narrowing conversion of 'S' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
   15 |             ll f = use_machine((vector<int>){P[0], S, P[1], S + 1});
      |                                                    ^
mushrooms.cpp:15:52: warning: narrowing conversion of 'S' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
mushrooms.cpp:15:66: warning: narrowing conversion of 'P.std::vector<long long int>::operator[](1)' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
   15 |             ll f = use_machine((vector<int>){P[0], S, P[1], S + 1});
      |                                                                  ^
mushrooms.cpp:15:66: warning: narrowing conversion of 'P.std::vector<long long int>::operator[](1)' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
mushrooms.cpp:15:63: warning: narrowing conversion of '(S + 1)' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
   15 |             ll f = use_machine((vector<int>){P[0], S, P[1], S + 1});
      |                                                             ~~^~~
mushrooms.cpp:15:63: warning: narrowing conversion of '(S + 1)' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
mushrooms.cpp:28:66: warning: narrowing conversion of 'Q.std::vector<long long int>::operator[](0)' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
   28 |             ll f = use_machine((vector<int>){Q[0], S, Q[1], S + 1});
      |                                                                  ^
mushrooms.cpp:28:66: warning: narrowing conversion of 'Q.std::vector<long long int>::operator[](0)' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
mushrooms.cpp:28:52: warning: narrowing conversion of 'S' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
   28 |             ll f = use_machine((vector<int>){Q[0], S, Q[1], S + 1});
      |                                                    ^
mushrooms.cpp:28:52: warning: narrowing conversion of 'S' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
mushrooms.cpp:28:66: warning: narrowing conversion of 'Q.std::vector<long long int>::operator[](1)' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
   28 |             ll f = use_machine((vector<int>){Q[0], S, Q[1], S + 1});
      |                                                                  ^
mushrooms.cpp:28:66: warning: narrowing conversion of 'Q.std::vector<long long int>::operator[](1)' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
mushrooms.cpp:28:63: warning: narrowing conversion of '(S + 1)' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
   28 |             ll f = use_machine((vector<int>){Q[0], S, Q[1], S + 1});
      |                                                             ~~^~~
mushrooms.cpp:28:63: warning: narrowing conversion of '(S + 1)' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
mushrooms.cpp:41:49: warning: narrowing conversion of 'S' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
   41 |             ll f = use_machine((vector<int>){0, S});
      |                                                 ^
mushrooms.cpp:41:49: warning: narrowing conversion of 'S' from 'll' {aka 'long long int'} to 'int' [-Wnarrowing]
mushrooms.cpp:52:17: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   52 |     if(Q.size() == B){
      |        ~~~~~~~~~^~~~
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