Submission #1197543

#	Time	Username	Problem	Language	Result	Execution time	Memory
1197543		MateiKing80	Combo (IOI18_combo)	C++20	100 / 100	7 ms	484 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>

using namespace std;

string s;
char c[4];

string guess_sequence(int N){
	int k;
	if(press("AB")) {
		if(press("A")) {
			c[0] = 'B';
			c[1] = 'X';
			c[2] = 'Y';
			s = "A";
		} else {
			c[0] = 'A';
			c[1] = 'X';
			c[2] = 'Y';
			s = "B";
		}
	} else {
		if(press("X")) {
			c[0] = 'B';
			c[1] = 'A';
			c[2] = 'Y';
			s = "X";
		} else {
			c[0] = 'A';
			c[1] = 'X';
			c[2] = 'B';
			s = "Y";
		}
	}
	if(N == 1) 
	  return s;
	for (int i = 2; i < N; i ++) {
		k = press(s + c[0]  + c[1] + s + c[0] + c[0] + s + c[0] + c[2] + s + c[1]); 
		if(k == i + 1)
			s += c[0];
		else if(k == i)
			s += c[1];
		else
			s += c[2];
	}
	if (press(s + c[0]) == N)
		s += c[0];
	else {
		if(press(s + c[1]) == N)
			s += c[1];
	  else
			s += c[2];
	}
	return s;
}

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