Submission #1217587

#TimeUsernameProblemLanguageResultExecution timeMemory
1217587nickolasarapidisCombo (IOI18_combo)C++17
94 / 100
8 ms484 KiB
#include "combo.h" #include <bits/stdc++.h> using namespace std; string guess_sequence(int N){ string S; char start; if(press("A") == 1) start = 'A'; else if(press("B") == 1) start = 'B'; else if(press("X") == 1) start = 'X'; else start = 'Y'; S += start; vector<char> c; if(start != 'A') c.push_back('A'); if(start != 'B') c.push_back('B'); if(start != 'X') c.push_back('X'); if(start != 'Y') c.push_back('Y'); for(int i = 1; i < N - 2; i++){ int q = press(S + c[0] + S + c[1] + c[0] + S + c[1] + c[1] + S + c[1] + c[2]); if(q == i + 1) S += c[0]; else if(q == i + 2) S += c[1]; else S += c[2]; } if(S.size() == N - 2){ if(press(S + c[0]) == N - 1) S += c[0]; else if(press(S + c[1]) == N - 1) S += c[1]; else S += c[2]; } if(S.size() == N - 1){ if(press(S + c[0]) == N) S += c[0]; else if(press(S + c[1]) == N) S += c[1]; else S += c[2]; } return S; }
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