Submission #1255189

#TimeUsernameProblemLanguageResultExecution timeMemory
1255189charhaoCombo (IOI18_combo)C++20
5 / 100
0 ms408 KiB
#include "combo.h" #include<bits/stdc++.h> using namespace std; string guess_sequence(int n) { string ans=""; vector<char> t; if(press("AB")){//first character is A or B int T=press("A"); if(T==1) ans="A",t={'B','X','Y'}; else ans="B",t={'A','X','Y'}; } else{ int T=press("X"); if(T==1) ans="X",t={'A','B','Y'}; else ans="Y",t={'A','B','X'}; } for(int i=2;i<=n-1;i++){ string T=ans+t[1]; if(press(T)-ans.size()==1){ ans+=t[1]; continue; } bool flag=false; for(int j=0;j<3;j++){ T=ans+t[0]+t[j]; if(press(T)-ans.size()==2){ flag=true; break; } } if(flag) ans+=t[0]; else ans+=t[2]; } string aans=""; for(int j=0;j<=1;j++){ string T=ans+t[j]; if(press(T)-ans.size()==1){ aans=T; break; } } if(!aans.size()) aans=ans+t[2]; // cout<<aans<<'\n'; return aans; }
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