Submission #349485

#	Time	Username	Problem	Language	Result	Execution time	Memory
349485		David_M	Combo (IOI18_combo)	C++14	100 / 100	44 ms	556 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>
using namespace std;
string ans;
char c, a[]={'Y', 'A', 'B'};
string guess_sequence(int N){
	if(press("XY")){
		if(press("X"))ans+='X';
		else ans+='Y';
	}else{
		if(press("A"))ans+='A';
		else ans+='B';
	}
	if(N==1)return ans;
	if(ans=="Y")a[0]='X';
	if(ans=="A")a[1]='X';
	if(ans=="B")a[2]='X';
	 
	for (int i=1; i<N-1; i++)ans+=a[press(ans+a[1]+ans+a[2]+a[0]+ans+a[2]+a[1]+ans+a[2]+a[2])-i];
	if(press(ans+a[0])==N)return ans+a[0];
	if(press(ans+a[1])==N)return ans+a[1];
	return ans+a[2];
}

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