Submission #604831

#TimeUsernameProblemLanguageResultExecution timeMemory
604831boris_mihovCombo (IOI18_combo)C++14
5 / 100
1 ms256 KiB
#include <iostream> #include "combo.h" char let[4] = {'A', 'B', 'X', 'Y'}; std::string ans, guess; std::string guess_sequence(int n) { int letIdx = 3; for (int i = 0 ; i < 3 ; ++i) { ans += let[i]; if (press(ans)) { letIdx = i; break; } ans.pop_back(); } if (letIdx == 3) ans += let[3]; std::swap(let[letIdx], let[3]); for (int i = 2 ; i <= n-1 ; ++i) { guess = ans; guess += let[0]; guess += ans + let[1] + let[0]; guess += ans + let[1] + let[1]; guess += ans + let[1] + let[2]; int res = press(guess); if (res == i) ans += let[0]; if (res == i+1) ans += let[1]; if (res == i-1) ans += let[2]; } guess = ans + let[0]; if (press(guess) == n) return ans += let[0]; guess = ans + let[1]; if (press(guess) == n) return ans += let[1]; return ans += let[2]; }
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