Submission #500289

#	Time	Username	Problem	Language	Result	Execution time	Memory
500289		LucaIlie	Combo (IOI18_combo)	C++17	30 / 100	55 ms	548 KiB

combo

#include <iostream>

#include "combo.h"

using namespace std;

string guess_sequence( int n ) {
    int i;
    string ans;

    for ( i = 1; i <= n; i++ ) {
        if ( (i == 1 || ans[0] != 'A') && press( ans + 'A' ) == i )
            ans += 'A';
        else if ( (i == 1 || ans[0] != 'B') && press( ans + 'B' ) == i )
            ans += 'B';
        else if ( ans[0] == 'Y' || ((i == 1 || ans[0] != 'X') && press( ans + 'X' ) == i) )
            ans += 'X';
        else
            ans += 'Y';
    }

    return ans;
}

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