제출 #567589

#제출 시각아이디문제언어결과실행 시간메모리
567589valerikk콤보 (IOI18_combo)C++17
30 / 100
50 ms444 KiB
#include "combo.h" #include <vector> #include <string> #include <algorithm> std::string guess_sequence(int N) { static const char buttons[] = { 'A', 'B', 'X', 'Y' }; int first; if (press(std::string { buttons[0], buttons[1] })) { if (press(std::string { buttons[0] })) { first = 0; } else { first = 1; } } else { if (press(std::string { buttons[2] })) { first = 2; } else { first = 3; } } char Y = buttons[first]; char A = buttons[(first + 1) & 3]; char B = buttons[(first + 2) & 3]; char X = buttons[(first + 3) & 3]; std::string S { Y }; for (int i = 1; i < N; ++i) { if (press(S + A + S + B) == i + 1) { if (press(S + A) == i + 1) { S += A; } else { S += B; } } else { if (press(S + B) == i + 1) { S += B; } else { S += X; } } } return S; }
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