Urkupillit

#include <iostream>
using namespace std;
 
 
int main(){
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int n;
  long long k;
  cin >> n >> k;
  int i=0;
  int p=n-1;
  while (k>0){
    if (k<n-i){
      p=n-i-1 -k;
      k=0;
    }else{
      ++i;
      k-=n-i;
    }
  }
  for (int j=0; j<i; ++j) cout << n-j << ' ';
  for (int j=1; j<=p; ++j) cout << j << ' ';
  cout << n-i << ' ';
  for (int j=p+1; j<n-i; ++j) cout << j << ' ';
  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