Submission #986847

#	Time	Username	Problem	Language	Result	Execution time	Memory
986847		LucaIlie	Combo (IOI18_combo)	C++17	30 / 100	21 ms	1472 KiB

combo

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

using namespace std;

char ch[4] = {'A', 'B', 'X', 'Y' };
char alf[3];
string s;
string guess_sequence( int n ) {
    int coins, i, first_letter = -1, j, verific;
    for( i = 0; i < 3; i++ ) {
        s = ch[i];
        if( press(s) == 1 )
            first_letter = i;
    }
    if( first_letter == -1 )
        first_letter = 3;
    s = ch[first_letter];
    //cout << s;
    j = 0;
    for( i = 0; i < 4; i++ ) {
        if( i != first_letter ) {
            alf[j] = ch[i];
            j++;
        }
    }

    for( i = 1; i < n; i++ ) {
        for( j = 0; j < 3; j++ ) {
            if( j == 2 ) {
                s = s + alf[j];
                //cout << alf[j];
            } else if( press( s + alf[j] ) == i + 1 ) {
                s = s + alf[j];
                //cout << alf[j];
                break;
            }
        }
    }
    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:10:9: warning: unused variable 'coins' [-Wunused-variable]
   10 |     int coins, i, first_letter = -1, j, verific;
      |         ^~~~~
combo.cpp:10:41: warning: unused variable 'verific' [-Wunused-variable]
   10 |     int coins, i, first_letter = -1, j, verific;
      |                                         ^~~~~~~

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