Järjestys

input/code.cpp: In function 'int main()':
input/code.cpp:31:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (a != 1 && a != i)
                      ^
input/code.cpp:57:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (unsigned int x = 0; x < y; x++)
                               ^

#include <iostream>
#include <vector>
#include <sstream>
#include <string>
#include <algorithm>
 
int main()
{
	std::ios_base::sync_with_stdio(0);
	int n;
	int a = 0;
	std::cin >> n;
	std::cin.ignore(1, '\n');
	std::string sNumbers;
	std::getline(std::cin, sNumbers);
	std::istringstream is(sNumbers);
	std::vector<int> numbers;
	int x;
	numbers.resize(n);
	while (is >> x)
	{
		a++;
		numbers[x - 1] = a;
	}
 
	std::vector<int> rotates;
 
	for (unsigned int i = n; i > 0; i--)
	{
		int& a = numbers[i - 1];
		if (a != 1 && a != i)
		{
			rotates.push_back(a);
			rotates.push_back(i);
			for (unsigned int j = 0; j < i; j++)
			{
				int& b = numbers[j];
				if(b <= a) b = (a - b) + 1;
				if (j < i) b = (i - b) + 1;
			}
 
		}
		else if(a == 1)
		{
			for (unsigned int j = 0; j < i; j++)
			{
				int& b = numbers[j];
				if (j < i) b = i - b + 1;
				
			}
			rotates.push_back(i);
		}
	}
 
	int y = rotates.size();
	std::cout << y << '\n';
	for (unsigned int x = 0; x < y; x++)
	{
		std::cout << rotates[x] << " ";
	}
	return 0;
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 2

Verdict: ACCEPTED

Test 3

Group: 3

Verdict: TIME LIMIT EXCEEDED