Submission #169017

#	Time	Username	Problem	Language	Result	Execution time	Memory
169017		salil03	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

//OPTIMIZATIONS
#pragma GCC optimize("O3")
//(UNCOMMENT WHEN HAVING LOTS OF RECURSIONS)
//#pragma comment(linker, "/stack:200000000")
//(UNCOMMENT WHEN NEEDED)
//#pragma GCC optimize("Ofast,unroll-loops,no-stack-protector,fast-math")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,tune=native")
//OPTIMIZATIONS
#include <bits/stdc++.h>
#include<combo.h>
typedef long long ll;
typedef unsigned long long uu;
typedef long long int lll;
typedef unsigned long long int uuu;
using namespace std;

#define watch(x) cerr << "\n" \
					  << (#x) << " is " << (x) << endl
#define cel(x, y) 1 + ((x - 1) / y)
const double PI = 3.141592653589793238463;
const int MOD = 1000000007;
const int INF = 0x3f3f3f3f;

/*
$alil03

URL: url

Solution Begins here
*/

string guess_sequence(int n)
{
	char first = 'A';
	if(press('A') == 1)
	{
		first = 'A';
	}
	else if(press('B') == 1)
	{
		first = 'B'
	}
	else if(press('X') == 1)
	{
		first = 'X'
	}
    else if(press('Y') == 1)
	{
		first = 'Y'
	}
	int temp = n;
	n--;
	string s = "ABXY";
	string ans = "";
	ans += first;
	while(n--)
	{
		for(int i = 0; i<4; i++)
		{
			if(s[i] == first)
			{
				continue;
			}
			if(press(ans + s[i]) == temp-n)
			{
				ans += s[i];
				break;
			}
		}
	}
	return ans;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:35:11: error: could not convert ''A'' from 'char' to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
   35 |  if(press('A') == 1)
      |           ^~~
      |           |
      |           char
combo.cpp:39:16: error: could not convert ''B'' from 'char' to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
   39 |  else if(press('B') == 1)
      |                ^~~
      |                |
      |                char
combo.cpp:41:14: error: expected ';' before '}' token
   41 |   first = 'B'
      |              ^
      |              ;
   42 |  }
      |  ~            
combo.cpp:43:16: error: could not convert ''X'' from 'char' to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
   43 |  else if(press('X') == 1)
      |                ^~~
      |                |
      |                char
combo.cpp:45:14: error: expected ';' before '}' token
   45 |   first = 'X'
      |              ^
      |              ;
   46 |  }
      |  ~            
combo.cpp:47:19: error: could not convert ''Y'' from 'char' to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
   47 |     else if(press('Y') == 1)
      |                   ^~~
      |                   |
      |                   char
combo.cpp:49:14: error: expected ';' before '}' token
   49 |   first = 'Y'
      |              ^
      |              ;
   50 |  }
      |  ~