제출 #303689

#제출 시각아이디문제언어결과실행 시간메모리
303689ryansee자동 인형 (IOI18_doll)C++14
47 / 100
249 ms12644 KiB
#include "doll.h" #include <vector> #include <iostream> #include <algorithm> using namespace std; void create_circuit(int M, std::vector<int> A) { int N = A.size(); vector<vector<int> > qs(M + 1); for(int i = 0; i < N; ++i) { qs[A[i]].push_back(i); } bool subtask3 = true; for(int i = 1; i <= M; ++i) { if(qs[i].size() >= 5) { subtask3 = false; } } int bits = 1; while((1 << bits) < N) ++bits; vector<int> C(M + 1, -1); C[0] = A[0]; vector<int> X((1 << bits) - 1, -1), Y((1 << bits) - 1, -1); for(int i = 1; i < 1 << (bits - 1); ++i) { X[i - 1] = -(2 * i); Y[i - 1] = -(2 * i + 1); } vector<int> perm; for(int i = 1 << bits; i < 2 << bits; ++i) { perm.push_back(i); } sort(perm.begin(), perm.end(), [&](int i, int j) { for(int k = 0; k < bits; ++k) { if(((i >> k) & 1) != ((j >> k) & 1)) { return ((i >> k) & 1) < ((j >> k) & 1); } } return false; }); for(int i = 0; i < 1 << bits; ++i) { int tar = i - ((1 << bits) - N); if(tar < 0) tar = -1; else if(i != ((1 << bits) - 1)) tar = A[tar + 1]; else tar = 0; if(perm[i] % 2 == 0) { X[perm[i] / 2 - 1] = tar; } else { Y[perm[i] / 2 - 1] = tar; } } // for(auto i:C) cerr<<i<<' '; cerr<<'\n'; // for(auto i:X) cerr<<i<<' '; cerr<<'\n'; // for(auto i:Y) cerr<<i<<' '; cerr<<'\n'; answer(C, X, Y); }

컴파일 시 표준 에러 (stderr) 메시지

doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:12:7: warning: variable 'subtask3' set but not used [-Wunused-but-set-variable]
   12 |  bool subtask3 = true;
      |       ^~~~~~~~
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