Submission #1084357

#	Time	Username	Problem	Language	Result	Execution time	Memory
1084357		MahmytM	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include<bits/stdc++.h>
#include "combo.h"
using namespace std;
#define ll long long
#define ff first
#define ss second
#define pb push_back
string guess_sequence(int N){
	string s="";
	for(int i=0;i<N;i++){
		s+='A';
	}
	int in=0;
	char a='B';
	while(in<N){
		in=press(s);
		for(int i=in;i<N;i++){
			s[i]=a;
		}
		if(a=='A') a='B';
		else if(a=='B') a='X';
		else if(a=='X') a='Y';
		else if(a=='Y') a='A';
	}
	return a;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:25:9: error: could not convert 'a' from 'char' to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
   25 |  return a;
      |         ^
      |         |
      |         char