Submission #991138

#	Time	Username	Problem	Language	Result	Execution time	Memory
991138		RaduM	Combo (IOI18_combo)	C++17	100 / 100	24 ms	1748 KiB

combo

#include <iostream>
#include "combo.h"

using namespace std;

string guess_sequence(int n){
    string rez, l;
    if(press("AB")){
        if(press("A")){
            rez += 'A';
            l = "BXY";
        }
        else{
            rez += 'B';
            l = "AXY";
        }
    }
    else if(press("X")){
        rez += 'X';
        l = "ABY";
    }
    else{
        rez += 'Y';
        l = "ABX";
    }
    for(int i = 2; i < n; i++){
        string temp = "";
        for(auto x : l) temp += rez + l[0] + x;
        temp += rez + l[1];
        int x = press(temp);
        if(x == i + 1) rez += l[0];
        else if(x == i) rez += l[1];
        else rez += l[2];
    }
    if(n > 1){
        if(press(rez + l[0]) == n) rez += l[0];
        else if(press(rez + l[1]) == n) rez += l[1];
        else rez += l[2];
    }
    return rez;
}

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