제출 #565949

#제출 시각아이디문제언어결과실행 시간메모리
565949hoanghq2004콤보 (IOI18_combo)C++14
100 / 100
29 ms640 KiB
#include <bits/stdc++.h> #pragma GCC optimize ("O3") #pragma GCC optimize ("unroll-loops") #include <ext/pb_ds/assoc_container.hpp> #include <ext/pb_ds/tree_policy.hpp> #include "combo.h" using namespace __gnu_pbds; using namespace std; template <typename T> using ordered_set = tree <T, null_type, less <T>, rb_tree_tag, tree_order_statistics_node_update>; //namespace { // //constexpr int MAX_N = 2000; //constexpr int MAX_NUM_MOVES = 8000; // //int N; //std::string S; // //int num_moves; // //void wrong_answer(const char *MSG) { // printf("Wrong Answer: %s\n", MSG); // exit(0); //} // //} // namespace // //int press(std::string p) { // if (++num_moves > MAX_NUM_MOVES) { // wrong_answer("too many moves"); // } // int len = p.length(); // if (len > 4 * N) { // wrong_answer("invalid press"); // } // for (int i = 0; i < len; ++i) { // if (p[i] != 'A' && p[i] != 'B' && p[i] != 'X' && p[i] != 'Y') { // wrong_answer("invalid press"); // } // } // int coins = 0; // for (int i = 0, j = 0; i < len; ++i) { // if (j < N && S[j] == p[i]) { // ++j; // } else if (S[0] == p[i]) { // j = 1; // } else { // j = 0; // } // coins = std::max(coins, j); // } // return coins; //} string guess_sequence(int N) { char bg; string button; string s; if (press("AB")) { if (press("A")) button = "BXY", s = "A"; else button = "AXY", s = "B"; } else { if (press("X")) button = "ABY", s = "X"; else button = "ABX", s = "Y"; } for (int i = 1; i < N; ++i) { if (i + 1 < N) { string ask = s + button[0] + button[0] + s + button[0] + button[1] + s + button[0] + button[2] + s + button[1]; int _ = press(ask); if (_ == i) s.push_back(button[2]); if (_ == i + 1) s.push_back(button[1]); if (_ == i + 2) s.push_back(button[0]); } else { string ask = s + button[0]; if (press(ask) == N) s.push_back(button[0]); else { ask = s + button[1]; if (press(ask) == N) s.push_back(button[1]); else s.push_back(button[2]); } } } return s; } // //int main() { // char buffer[MAX_N + 1]; // if (scanf("%s", buffer) != 1) { // fprintf(stderr, "Error while reading input\n"); // exit(1); // } // S = buffer; // N = S.length(); // // num_moves = 0; // std::string answer = guess_sequence(N); // if (answer != S) { // wrong_answer("wrong guess"); // exit(0); // } // printf("Accepted: %d\n", num_moves); // return 0; //}

컴파일 시 표준 에러 (stderr) 메시지

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:60:10: warning: unused variable 'bg' [-Wunused-variable]
   60 |     char bg;
      |          ^~
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