Submission #119924

#	Time	Username	Problem	Language	Result	Execution time	Memory
119924		Boxworld	Combo (IOI18_combo)	C++14	100 / 100	41 ms	564 KiB

combo

#include <bits/stdc++.h>
using namespace std;
#include "combo.h"
std::string guess_sequence(int N) {
	string S,a,b,c;
	if (press("AB")>=1){
		if(press("A")==1)S="A",a="B",b="X",c="Y";
		else S="B",a="A",b="X",c="Y";
	}else{
		if(press("X")==1)S="X",a="A",b="B",c="Y";
		else S="Y",a="A",b="B",c="X";
	}
	for (int i=1;i<N-1;i++){
		string p=S+a+S+b+a+S+b+b+S+b+c;
		int X=press(p);
		if (X==i)S+=c;
		else if(X==i+1)S+=a;
		else S+=b;
	}
	if(N>1){
		if (press(S+a+S+b)==N){
			if (press(S+a)==N)S+=a;else S+=b;
		}else S+=c;
	}
	return S;
}

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