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- #include <iostream>
- using namespace std;
- int main()
- {
- int n, i, k, v=0, a[100][100];
- cin>>n;
- for(k=1; k<=n/2+n%2; k++)
- {
- for(j=k; j<=n-k+1; j++)
- a[k][j]=++v;
- for(i=k+1; i<=n-k+1; i++)
- a[i][n-k+1]=++v;
- for(j=n-k; j>=k; j--)
- a[n-k+1][j]=++v;
- for(i=n-k; i>=k+1; i--)
- a[i][k]=++v;
- }
- for(i=1; i<=n; i++)
- {
- for(j=1; j<=n; j++)
- cout<<a[i][j]<<" ";
- cout<<endl;
- }
- return 0;
- }
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