Submission #406073

#TimeUsernameProblemLanguageResultExecution timeMemory
406073Waratpp123Combo (IOI18_combo)C++14
100 / 100
53 ms632 KiB
#include "combo.h" #include<bits/stdc++.h> using namespace std; string ans,p; char a[4]; string guess_sequence(int N) { int c1=press("AB"),c; int c2=press("AX"); if(c1==0&&c2==0){ a[0]='Y'; a[1]='A'; a[2]='B'; a[3]='X'; } if(c1==0&&c2!=0){ a[0]='X'; a[1]='A'; a[2]='B'; a[3]='Y'; } if(c1!=0&&c2==0){ a[0]='B'; a[1]='A'; a[2]='Y'; a[3]='X'; } if(c1!=0&&c2!=0){ a[0]='A'; a[1]='Y'; a[2]='B'; a[3]='X'; } ans=a[0]; if(N==1) return ans; for (int i = 1; i <= N-2; ++i) { p.clear(); p=ans+a[1]+a[1]+ans+a[1]+a[2]+ans+a[1]+a[3]+ans+a[2]; c=press(p); if(c==i) ans.push_back(a[3]); else if(c==i+1) ans.push_back(a[2]); else if(c==i+2) ans.push_back(a[1]); } p.clear(); p=ans+a[1]; c=press(p); if(c==N) return p; p.clear(); p=ans+a[2]; c=press(p); if(c==N) return p; p.clear(); p=ans+a[3]; return p; }
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