Submission #309630

#	Time	Username	Problem	Language	Result	Execution time	Memory
309630		Genius1506	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include<bits/stdc++.h>
using namespace std;

string guess_sequence(int n){
    string ans;
    char a='A',b='B',c='Y';
    if(press("AB")){
        if(press("A")){
            ans="A";
            a='X';
        }
        else{
            ans="B";
            b='X';
        }
    }
    else{
        if(press("X")){
            ans="X";
        }
        else{
            ans="Y";
          	c='X';
        }
    }
    for(int i = 2; i < n; i++){
        int chu = press(ans+a+ans+b+a+ans+b+b+ans+b+c);
        if(chu==i)
            ans+=a;
        else if(chu==i+1)
            ans+=b;
        else 
            ans+=c;
    }   
    if(n>=2){
        if(press(ans+a)==n)
            ans+=a;
        else if(press(ans+b)==n)
            ans+=b;
        else
            ans+=c;
        return ans;
    }
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:7:8: error: 'press' was not declared in this scope
    7 |     if(press("AB")){
      |        ^~~~~
combo.cpp:27:19: error: 'press' was not declared in this scope
   27 |         int chu = press(ans+a+ans+b+a+ans+b+b+ans+b+c);
      |                   ^~~~~
combo.cpp:36:12: error: 'press' was not declared in this scope
   36 |         if(press(ans+a)==n)
      |            ^~~~~
combo.cpp:44:1: warning: control reaches end of non-void function [-Wreturn-type]
   44 | }
      | ^