제출 #700879

#제출 시각아이디문제언어결과실행 시간메모리
700879mychecksedad콤보 (IOI18_combo)C++17
100 / 100
40 ms628 KiB
#include <bits/stdc++.h> using namespace std; int press(std::string p); char find_first(){ int q = press("AB"); if(q >= 1){ q = press("A"); if(q) return 'A'; return 'B'; } q = press("X"); if(q) return 'X'; return 'Y'; } string guess_sequence(int N){ vector<string> c {"A", "B", "X", "Y"}; char f = find_first(); for(int i = 0; i < 4; ++i){ if(c[i][0] == f){ c.erase(c.begin() + i); break; } } string s = ""; s += f; if(N == 1) return s; vector<string> Q {c[0], c[1] + c[0], c[1] + c[1], c[1] + c[2]}; for(int i = 2; i < N; ++i){ string t = ""; for(int j = 0; j < 4; ++j) t += s + Q[j]; int q = press(t); if(q == i - 1){ s += c[2]; }else if(q == i){ s += c[0]; }else{ s += c[1]; } } int q = press(s + c[0]); if(q == N){ s += c[0]; }else{ q = press(s + c[1]); if(q == N){ s += c[1]; }else{ s += c[2]; } } return s; }
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