Submission #445359

#	Time	Username	Problem	Language	Result	Execution time	Memory
445359		silverfish	Combo (IOI18_combo)	C++14	10 / 100	55 ms	584 KiB

combo

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

#define pb push_back

set<char> st = {'A', 'B', 'X', 'Y'};

string guess_sequence(int n) {
	string ans="";
	vector<char> c;
	for(char ch : st){
		if(press(ans+ch)){
			ans.pb(ch);	
			for(char cch : st) if(cch != ch) c.pb(cch);
			break;
		}
	}

	for(int i = 1; i < n; ++i){
		bool found = 0;
		for(int j = 0; j < 2; ++j){
			if(press(ans + c[j]) == i+1){
				found = 1;
				ans.pb(c[j]);
				break;
			}
		}
		if(!found) ans.pb(c[2]);
	}
	return ans;
}

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