Submission #488874

#	Time	Username	Problem	Language	Result	Execution time	Memory
488874		1ne	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include "combo.h"
#include<bits/stdc++.h>
using namespace std;
std::string guess_sequence(int n) {
string a,b,x,y;
a+='A';
b+='B';
x+='X';
y+='Y';
string c;
string s;
if (press(a)==1){
  c = "BXY";
  s+='A';
}
else if (press(b)==1){
  c = "AXY";
  s+='B';
}
else if (press(x)==1){
  c = "BAY";
  s+='X';
}
else{
  c = "BXA";
  s+='Y';
}
if (n==1){
return s;
}
for (int i = 1;i<n-1;++i){
  q.clear();
  q+=s;
  q+=c[0];
  string t;
  t+=s;
  t+=c[1];
  for (auto x:c){
     t+=x;
      q+=t;
      t.pop_back();
  }
  temp = press(q);
  if (temp == s.length()+1){
      s+=c[0];	
  }
  else if(temp==s.length()+2){
  	s+=c[1];
  }
  else s+=c[2];
}
for (auto x:c){
	s+=x;
	if (press(s)==n){
		return s;
	}
	s.pop_back();
}

  return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:32:3: error: 'q' was not declared in this scope
   32 |   q.clear();
      |   ^
combo.cpp:43:3: error: 'temp' was not declared in this scope
   43 |   temp = press(q);
      |   ^~~~