Submission #109598

#	Time	Username	Problem	Language	Result	Execution time	Memory
109598		youssefbou62	Combo (IOI18_combo)	C++14	30 / 100	79 ms	448 KiB

combo

#include  <bits/stdc++.h>
#include "combo.h" 
using namespace std;

#define mp make_pair
#define fi first
#define se second
#define all(v) v.begin(),v.end()
#define allarr(a) a , a + n
#define pb push_back



string guess_sequence (int n){
		string buttons ,s;  
		if( press("A")==1 ) s.pb('A') , buttons = "BXY" ;
		else if( press("B")==1 ) s.pb('B') , buttons = "AXY" ;
		else if( press("X")==1 ) s.pb('X') , buttons = "ABY" ;
		else  s.pb('Y' ) , buttons = "ABX" ; 
		
		char c = buttons.back () ; 
		buttons.pop_back () ;
		for(int i = 1 ; i < n ; i++ ){
			int ans , ok = 1;// cout<<i<< " " << s <<endl ; 
			for(char b : buttons ){
				ans = press ( s + b ) ; 
				if( ans == i + 1 ){
					s += b ;ok = 0 ;  
					break ; 
				}
			}if( ok ) 
			s += c ; 
		}	 
		
		assert( (int)s.length() == n) ; 
		return s ; 
}

• Subtask 1: 5 / 5
• Subtask 2: 25 / 95