Submission #1008239

#	Time	Username	Problem	Language	Result	Execution time	Memory
1008239		Unlucky	Combo (IOI18_combo)	C++17	5 / 100	1 ms	596 KiB

combo

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

string guess_sequence(int n){
    string ans;
    string guess[5];
    if (press("AB")){
        if (press("A")){
            ans = "A";
            guess[0] = "BB";
            guess[1] = "BX";
            guess[2] = "BY";
            guess[3] = "X";
            guess[4] = "Y";
        } else {
            ans = "B";
            guess[0] = "AA";
            guess[1] = "AX";
            guess[2] = "AY";
            guess[3] = "X";
            guess[4] = "Y";
        }
    } else {
        if (press("X")){
            ans = "X";
            guess[0] = "AA";
            guess[1] = "AB";
            guess[2] = "AY";
            guess[3] = "B";
            guess[4] = "Y";
        } else {
            ans = "Y";
            guess[0] = "AA";
            guess[1] = "AB";
            guess[2] = "AX";
            guess[3] = "B";
            guess[4] = "X";
        }
    }
    for (int i = 1; i < n-1; i++){
        int res = press(ans+guess[0] + ans+guess[1] + ans+guess[2] + ans+guess[3]);
        if (res == i+2){
            ans += guess[0][0];
        } else if (res == i+1){
            ans += guess[3];
        } else {
            ans += guess[4];
        }
    }
    if (press(ans+guess[3] + ans+guess[4]) == n){
        if (press(ans+guess[3]) == n){
            return ans+guess[3];
        } else {
            return ans+guess[4];
        }
    } else {
        return ans+guess[0][0];
    }
}

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