Submission #500052

#	Time	Username	Problem	Language	Result	Execution time	Memory
500052		LucaIlie	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 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 && ch[0] != 'A') && press( ans + 'A' ) == i )
            ans += 'A';
        else if ( (i > 1 && ch[1] != 'B') && press( ans + 'B' ) == i )
            ans += 'B';
        else if ( (i > 1 && ch[2] != 'X') && press( ans + 'X' ) == i )
            ans += 'X';
        else
            ans += 'Y';
    }

    return ans;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:12:24: error: 'ch' was not declared in this scope
   12 |         if ( (i > 1 && ch[0] != 'A') && press( ans + 'A' ) == i )
      |                        ^~