Submission #1114945

#	Time	Username	Problem	Language	Result	Execution time	Memory
1114945		slumio	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>
using namespace std;
using ll = long long int;
using ull = unsigned long long;
/*I liked you once but not anymore now
She's wearin' dresses on the border line
(Lookin' good)
Oh wakin' senses that were lost in time
(Make amends)
This liberation is the one they'll love for ages
(Hey man, I see them comin')*/

string guess_sequence(int n)
{
    string ans = "";
    string s = "";
    string p;

    if (press("AB"))
    {

        if (press("A"))
            ans = "A", s = "BXY";
        else
            ans = "B", s = "AXY";
    }
    else
    {
        if (press("X"))
            ans = "X", s = "ABY";
        else
            ans = "Y", s = "AXB";
    }

    for (int i = 1; i <= n - 1; i++)
    {

        p = ans + s[0] + s[1] + ans + s[0] + s[2] + ans + s[0] + s[0] + ans + s[1];

        int mp = press(p);
        if (mp == ans.size() + 2)
        {
            ans.push_back(s[0]);
        }
        else if (mp == ans.size() + 1)
        {
            ans.push_back(s[1]);
        }
        else
            ans.push_back(s[2]);
    }

    if (ans.size() < n)
    {
        p = ans + s[0];

        if (press(p) == n)
        {
            ans.push_back(s[0]);
            return ans;
        }

        p = ans + s[1];
        if (press(p) == n)
        {
            ans.push_back(s[1]);
            return ans;
        }

        ans.push_back(s[2]);

        return ans;
    }

    return ans;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:19:9: error: 'press' was not declared in this scope
   19 |     if (press("AB"))
      |         ^~~~~
combo.cpp:40:18: error: 'press' was not declared in this scope
   40 |         int mp = press(p);
      |                  ^~~~~
combo.cpp:41:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |         if (mp == ans.size() + 2)
      |             ~~~^~~~~~~~~~~~~~~~~
combo.cpp:45:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |         else if (mp == ans.size() + 1)
      |                  ~~~^~~~~~~~~~~~~~~~~
combo.cpp:53:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   53 |     if (ans.size() < n)
      |         ~~~~~~~~~~~^~~
combo.cpp:57:13: error: 'press' was not declared in this scope
   57 |         if (press(p) == n)
      |             ^~~~~
combo.cpp:64:13: error: 'press' was not declared in this scope
   64 |         if (press(p) == n)
      |             ^~~~~