0分求助

#include<bits/stdc++.h>
using namespace std;
int a[22][22];
int main(){
	int n,x,y,p,q,ans=1;
	cin>>n;
	x=(n+1)/2;
	y=1;
	a[x][y]=ans;
	for(int k=1;k<=n*n;k++){
		ans++;
		if(y!=1) y--;
		else y=n;
		if(x!=n) x++;
		else x=1;
		if(a[x][y]==0) a[x][y]=ans;
		else{
			if(q!=n) a[p][q+1]=ans;
			else a[p][1]=ans;
		}
		p=x;
		q=y;
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			cout<<a[i][j]<<" ";
		}
		cout<<endl;
	}
	return 0;
}