Aita

#include <iostream>
#include <vector>
#include <map>
#include <string>
#include <algorithm>
#include <utility>

using namespace std;

typedef long long LL;

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    LL n, k;
    cin >> n >> k;
    if(n < 2*k){
        cout << "QAQ" << endl;
        return 0;
    }
    if(n % 2 == 0){
        LL left = n/2;
        LL right = n;
        for(LL i = 0; i < n/2; i++){
            cout << left << " " << right << " ";
            left--; right--;
        }
    }
    else{
        cout << n/2 + 1 << " ";
        LL left = n/2;
        LL right = n;
        for(LL i = 0; i < n/2; i++){
            cout << right << " " << left << " ";
            left--; right--;
        }    
    }
    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