Submission #203394

#	Time	Username	Problem	Language	Result	Execution time	Memory
203394		0gnjen	Combo (IOI18_combo)	C++14	5 / 100	3 ms	276 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++)
    {
        //cout << i << endl;
        int p = press(s+c[1]+s+c[2]+c[0]+s+c[2]+c[1]+s+c[2]+c[2]);

        if(p == i)
            s += c[0];

        if(p == i+1)
            s += c[1];

        if(p == i+2)
            s += c[2];
    }

    string ask1 = s;ask1+=c[0];
    string ask2 = s;ask2+=c[1];
    string ask3 = s;ask3+=c[2];
    if(press(ask1) == N)s = ask1;
    else if(press(ask2) == N)s = ask2;
    else s = ask3;

    return s;
}

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