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| #include <bits/stdc++.h>
#define int long long
#define N 1000005
#define IOS ios::sync_with_stdio(0),cin.tie(0)
using namespace std;
int n;
signed main(){
IOS;
cin>>n;
bool vis[N];memset(vis,0,sizeof(vis));
if(n == 2 || n == 3)cout<<"NO SOLUTION"<<endl;
else if(n == 4)cout<<"2 4 1 3 ";
else{
for(int i=1;i<=n;i+=2){
cout<<i<<" ";
vis[i] = 1;
}
for(int i=1;i<=n;i++){
if(vis[i] == 0)cout<<i<<" ";
}
}
cout<<endl;
}
|