Submission #584628

#	Time	Username	Problem	Language	Result	Execution time	Memory
584628		supercatex	Combo (IOI18_combo)	C++11	30 / 100	40 ms	480 KiB

combo

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

int press(string);

string guess_sequence(int N)
{
    string p = "", c = "";
    if (press("AB") > 0)
        if (press("A") > 0) p = "A", c = "BXY";
        else p = "B", c = "AXY";
    else
        if (press("X") > 0) p = "X", c = "ABY";
        else p = "Y", c = "ABX";

    int x = 1;
    while (x < N) {
        if (press(p + c[0]) > x) {
            p = p + c[0];
        } else if (press(p + c[1]) > x) {
            p = p + c[1];
        } else {
            p = p + c[2];
        }
        x++;
    }
    return p;
}

• Subtask 1: 5 / 5
• Subtask 2: 25 / 95