제출 #861654

#제출 시각아이디문제언어결과실행 시간메모리
861654Ariadna콤보 (IOI18_combo)C++14
30 / 100
24 ms1464 KiB
#include <bits/stdc++.h> using namespace std; int press(string p); vector < char > aux; string first_char() { string s = "AB"; int ans = press(s); if (ans == 2) { aux = {'B', 'X', 'Y'}; return s; } if (ans) { s = "A"; if (press(s)) { aux = {'B', 'X', 'Y'}; return s; } aux = {'A', 'X', 'Y'}; return "B"; } s = "X"; if (press(s)) { aux = {'A', 'B', 'Y'}; return s; } aux = {'A', 'B', 'X'}; return "Y"; } string guess_sequence(int N) { string s = first_char(); for (int i = (int)s.size() + 1; i <= N; ++i) { s += aux[0]; if ((i != 2 || s[0] != 'A') && press(s) == i) continue; s[i - 1] = aux[1]; if ( press(s) == i) continue; s[i - 1] = aux[2]; } return s; }
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