Submission #203393

#	Time	Username	Problem	Language	Result	Execution time	Memory
203393		0gnjen	Combo (IOI18_combo)	C++14	5 / 100	2 ms	256 KiB

combo

#include <bits/stdc++.h>
#include "combo.h"

using namespace std;

std::string guess_sequence(int N)
{
    //cout << N << endl;
    string s = "";
    string c = "ABXY";

    if(press("AB"))
    {
        if(press("A"))
        {
            s += 'A';
            c = "BXY";
        }

        else
        {
            s += 'B';
            c = "AXY";
        }
    }

    else
    {
        if(press("X"))
        {
            s += 'X';
            c = "ABY";
        }

        else
        {
            s += 'Y';
            c = "ABX";
        }
    }

    for(int i = 1; i < N-1; i++)
    {
            string ask1 = s ;
            ask1+=c[0];

            ask1+=s;
            ask1+=c[1];
            ask1+=c[0];

            ask1+=s;
            ask1+=c[1];
            ask1+=c[1];

            ask1+=s;
            ask1+=c[1];
            ask1+=c[2];

            int ans =press(ask1);
            if(ans==i)s+=c[2];
            else if(ans==i+1)s+=c[0];
            else s+=c[1];
    }

    if(press(s+c[0]) == N)
    {
        s += c[0];
    }

    else if(press(s+c[1]) == N)
        s += c[1];

    else
        s += c[2];

    return s;
}

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