// Source: https://usaco.guide/general/io

#include <bits/stdc++.h>
using namespace std;


int query(int x, int y);



int solve(int n){
    vector<array<int, 3>> a;
    for(int i=0;i<n;i++){
        for(int j=i+2;j<n;j++){
            if(i==0 && j==n-1) continue;
            int value=max(i, n-j);
            if(i==0){
                value=max(j, n-j);
            }
            a.push_back({value, i, j});
        }
    }
    sort(a.begin(), a.end());
    for(int i=0;i<a.size();i++){
        int value = a[i][0];
        int from = a[i][1];
        int to = a[i][2];
        if (from == 0) { from = to; to = n; }
        // cout << from << " " << to << " " << value << endl;
        if(from, to) {
            return from*n+to;
        }
    }
    return 0;
}

// int main() {
//     solve(7);
// }