Inversiot

input/code.cpp: In function 'int main()':
input/code.cpp:19:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(d[0].size() + r <= k)
                      ^
input/code.cpp:34:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int ii = 0; ii < d.size(); ii++)
                     ^
input/code.cpp:35:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int jj = 0; jj < d[ii].size(); jj++)
                      ^

#include <deque>
#include <iostream>
#include <vector>

using namespace std;

int main()
{
	long long int n, k;
	cin >> n >> k;

	long long int i = n, r = 0;

	deque<vector<int>> d;
	d.push_back({});

	while(r < k && i > 0)
	{
		if(d[0].size() + r <= k)
		{
			r += d[0].size();
			d[0].push_back(i);
			i--;
		}
		else
		{
			d.push_front({});
		}
	}

	for(int ii = 1; ii <= i; ii++)
		cout << ii << " ";

	for(int ii = 0; ii < d.size(); ii++)
		for(int jj = 0; jj < d[ii].size(); jj++)
			cout << d[ii][jj] << " ";

	cout << endl;
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: ACCEPTED

Test 12

Group: 3

Verdict: ACCEPTED

Test 13

Group: 3

Verdict: ACCEPTED

Test 14

Group: 3

Verdict: ACCEPTED

Test 15

Group: 3

Verdict: ACCEPTED