Submission #677112

#	Time	Username	Problem	Language	Result	Execution time	Memory
677112		hello_there_123	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include<bits/stdc++.h>
//#include "combo.h"
using namespace std;
string arr[4]={"A","B","X","Y"};
set<string>s;
string guess_sequence(int N){
	string ans = "";
	string start = "";
	s.insert("A");
	s.insert("B");
	s.insert("X");
	s.insert("Y");
	for(int i=0;i<3;i++){
		if(press(arr[i]) == 1){
			start = arr[i];
			break;
		}
	}
	s.erase(start);
	vector<string>v;
	for(auto string:s) v.push_back(string);
	if(start == "") start = "Y";
	ans+=start;
	for(int i=0;i<N-2;i++){
		string tr = "";
		tr+=ans;
		tr+=v[0];
		tr+=ans;
		tr+=v[1];
		tr+=v[0];
		tr+=ans;
		tr+=v[1];
		tr+=v[1];
		tr+=ans;
		tr+=v[1];
		tr+=v[2];
		if(press(tr) == ans.length()){
			ans+=v[2];
		}
		else if(press(tr) == ans.length()+1){
			ans+=v[0];
		}
		else ans+=v[1];
		
	}
	if(press(ans+v[0]) == N) return ans+v[0];
	if(press(ans+v[1]) == N) return ans+v[1];
	return ans+v[2];
 
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:14:6: error: 'press' was not declared in this scope
   14 |   if(press(arr[i]) == 1){
      |      ^~~~~
combo.cpp:37:6: error: 'press' was not declared in this scope
   37 |   if(press(tr) == ans.length()){
      |      ^~~~~
combo.cpp:46:5: error: 'press' was not declared in this scope
   46 |  if(press(ans+v[0]) == N) return ans+v[0];
      |     ^~~~~
combo.cpp:47:5: error: 'press' was not declared in this scope
   47 |  if(press(ans+v[1]) == N) return ans+v[1];
      |     ^~~~~