Submission #401550

#	Time	Username	Problem	Language	Result	Execution time	Memory
401550		tredsused70	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>
 
using namespace std;
 
string guess_sequence(int n)
{
    string ans,help;
    char st;
    if(press("AX"))
    {
        if(press("A")==1)
            ans="A";
        else
            ans="X";
    }
    else
    {
        if(press("B")==1)
            ans="B";
        else
            ans="Y";
    }
    st=ans[0];
    int t;
    for(int i=1;i<n-1;i++)
    {
        if(st=='A')
        {
            help=ans+"BB"+ans+"BY"+ans+"BX"+ans+"Y";
            t=press(help);
            if(t==i+2)
                ans+="B";
            if(t==i+1)
                ans+="Y";
            if(t==i)
                ans+="X";
        }
        if(st=='B')
        {
            help=ans+"AA"+ans+"AY"+ans+"AX"+ans+"Y";
            t=press(help);
            if(t==i+2)
                ans+="A";
            if(t==i+1)
                ans+="Y";
            if(t==i)
                ans+="X";
        }
        if(st=='Y')
        {
            help=ans+"AA"+ans+"AB"+ans+"AX"+ans+"B";
            t=press(help);
            if(t==i+2)
                ans+="A";
            if(t==i+1)
                ans+="B";
            if(t==i)
                ans+="X";
        }
        if(st=='X')
        {
            help=ans+"AA"+ans+"AB"+ans+"AY"+ans+"B";
            t=press(help);
            if(t==i+2)
                ans+="A";
            if(t==i+1)
                ans+="B";
            if(t==i)
                ans+="Y";
        }
        help.clear();
    }
    help=ans+"B"+ans+"A";
    if(press(help)==n)
    {
        if(press(ans+"B")==n)
            ans+="B";
        else
            ans+="A";
    }
    else
    {
        if(press(ans+"X")==n)
            ans+="X";
        else
            ans+="Y";
    }
    return ans;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:9:8: error: 'press' was not declared in this scope
    9 |     if(press("AX"))
      |        ^~~~~
combo.cpp:30:15: error: 'press' was not declared in this scope
   30 |             t=press(help);
      |               ^~~~~
combo.cpp:41:15: error: 'press' was not declared in this scope
   41 |             t=press(help);
      |               ^~~~~
combo.cpp:52:15: error: 'press' was not declared in this scope
   52 |             t=press(help);
      |               ^~~~~
combo.cpp:63:15: error: 'press' was not declared in this scope
   63 |             t=press(help);
      |               ^~~~~
combo.cpp:74:8: error: 'press' was not declared in this scope
   74 |     if(press(help)==n)
      |        ^~~~~