Submission #500294

#	Time	Username	Problem	Language	Result	Execution time	Memory
500294		LucaIlie	Combo (IOI18_combo)	C++17	0 / 100	1 ms	200 KiB

combo

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

using namespace std;

string guess_sequence( int n ) {
    char a, b, x, y;
    int l, i;
    string ans;

    ans = "";

    if ( press( "A" ) ) {
        a = 'B';
        b = 'X';
        x = 'Y';
        y = 'A';
    } else if ( press( "B" ) ) {
        a = 'A';
        b = 'X';
        x = 'Y';
        y = 'B';
    } else if ( press( "C" ) ) {
        a = 'A';
        b = 'B';
        x = 'Y';
        y = 'X';
    } else {
        a = 'A';
        b = 'B';
        x = 'X';
        y = 'Y';
    }

    ans += y;

    for ( i = 2; i <= n; i++ ) {
        l = press( (ans + a) + (ans + b + a) + (ans + b + b) + (ans + b + x) );
        if ( l == i )
            ans += a;
        else if ( l == i + 1 )
            ans += b;
        else
            ans += x;
    }

    return ans;
}

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