Submission #1161206

#	Time	Username	Problem	Language	Result	Execution time	Memory
1161206		Aza	Combo (IOI18_combo)	C++20	5 / 100	0 ms	408 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>
using namespace std;
string guess_sequence(int N){
	string s;
	string g = "ABXY";
	char ign = 'A';
	for(int i = 0; i < 3; i++){
		string h;
		h += g[i];
		if(press(h) == 1){
			s += h;
			ign = g[i];
			break;
		}
	}
	if(s == ""){
		ign = g[3];
		s += ign;
	}
	string gg;
	for(char ch:g){
		if(ch == ign)continue;
		gg += ch;
	}
	g = gg;
	for(int i = 2; i < N; i++){
		string p = s + g[0] + s + g[1] + g[0] + s + g[1] + g[1] + s + g[1] + g[2];
		if(press(p) == i){
			s += g[0];
		}
		else if(press(p) == i + 1){
			s += g[1];
		}
		else{
			s += g[2];
		}
	}
	for(int i = 0; i < 2; i++){
		if(press(s + g[i]) == N){
			return s + g[i];
		}
	}
	return s + g[2];
}
/*



*/

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