Submission #339224

#	Time	Username	Problem	Language	Result	Execution time	Memory
339224		Kerim	Combo (IOI18_combo)	C++17	97 / 100	55 ms	556 KiB

combo

#include "combo.h"
#include "bits/stdc++.h"
using namespace std;
string tmp="ABXY";
string guess_sequence(int N) {
	string ans="T",avl;int ok=0;
	for(int i=0;i<3;i++){
		ans[0]=tmp[i];
		if(press(ans)){
			ok=1;break;
		}
	}if(!ok)ans=tmp[3];
  	if(N==1)
      	return ans;
	for(int i=0;i<4;i++)
		if(ans[0]!=tmp[i])
			avl+=tmp[i];
	tmp=avl;
	for(int i=2;i<N;i++){
		int val=press(ans+tmp[0]+ans+tmp[1]+tmp[0]+ans+tmp[1]+tmp[1]+ans+tmp[1]+tmp[2]);
		if(val==i)ans+=tmp[0];	
		else if(val>i)ans+=tmp[1];
		else ans+=tmp[2];
	}
	if(press(ans+tmp[0])==N)return ans+tmp[0];
	if(press(ans+tmp[1])==N)return ans+tmp[1];
	return ans+tmp[2];
}

• Subtask 1: 5 / 5
• Subtask 2: 92 / 95