Submission #109592

#	Time	Username	Problem	Language	Result	Execution time	Memory
109592		youssefbou62	Combo (IOI18_combo)	C++14	5 / 100	132 ms	500 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" ; 
		
		for(int i = 1 ; i < n ; i++ ){
			if( i == 1 ) {
				for( char b : buttons ){
					int ans = press ( s + b + buttons[0] ) ; 
					if( ans == i+1 ){
						s+=b ;  break ;
					} 
					if( ans == i+2 ) {
						s+= b ; 
						s+= buttons[0] ;  
						 i ++ ; 
						  break ;
					} 
				}
				
				continue ; 	 
			}
			string s2 = s ; 
			s2  += buttons [1] ; 
			for(int j=s2.length() ; j < n*4 ; j++ ) s2.pb(buttons[0]) ; 
			int ans = press ( s2 ) ; 
			if( ans >  i ){ 
			s.pb(buttons[1]) ;  ans -- ; 
			for(; i < ans &&  (int)s.length() < n ; i++ )s.pb(buttons[0]) ; 
		}
			else s += buttons[2] ;
			
		}	 
		
		assert( (int)s.length() == n) ; 
		return s ; 
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 95