Submission #986833

#	Time	Username	Problem	Language	Result	Execution time	Memory
986833		LucaIlie	Combo (IOI18_combo)	C++17	0 / 100	0 ms	344 KiB

combo

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

using namespace std;

char ch[4] = {'A', 'B', 'X', 'Y' };
string s;
string guess_sequence( int n ) {
    int coins, i, first_letter, j, verific;
    for( i = 0; i < 4; i++ ) {
        s = ch[i];
        if( press(s) == 1 )
            first_letter = i;
    }
    s = ch[first_letter];
    cout << s;
    for( i = 1; i < n; i++ ) {
        verific = 0;
        for( j = 0; j < 4; j++ ) {
            if( j == first_letter )
                continue;
            if( verific < 2 ) {
                verific++;
                if( press(s + ch[j]) == i + 1 ) {
                    s = s + ch[j];
                    cout << ch[j];
                    break;
                }
            } else {
                s = s + ch[j];
                cout << ch[j];
                break;
            }
        }
    }
    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:9:9: warning: unused variable 'coins' [-Wunused-variable]
    9 |     int coins, i, first_letter, j, verific;
      |         ^~~~~
combo.cpp:20:13: warning: 'first_letter' may be used uninitialized in this function [-Wmaybe-uninitialized]
   20 |             if( j == first_letter )
      |             ^~

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