x和y打死都不变，求助，回着必关。

#include<bits/stdc++.h>
using namespace std;
int n,a[50][50]; 
int main(){
    cin.tie(0);
    cout.tie(0);
    cin>>n;
    for(int i = 1;i<=n*n;i++){
    	int x = 1,y = n/2+1;
    	a[x][y] = i;
//    	cout<<x<<" "<<y<<" "<<"\n";
		int b = x,j = y;
    	if(b == 1){
    		b = n;
    		if(j == n){
    			j = 1;
			}
			else j++;
		}
		else{
			b--;
			if(j == n){
    			j = 1;
			}
			else j++;
		}
		if(a[b][j]!=0){
			b-=2,j--;
		}
		x = b,y = j;
	}
	for(int i = 1;i<=n;i++){
		for(int j = 1;j<=n;j++){
			cout<<a[i][j]<<" ";
		}
		cout<<"\n";
	}
	return 0;
}