delete pics to save space

1.2615.cpp

@@ -0,0 +1,27 @@
+#include<cstdio>
+using namespace std;
+const int maxn=45;
+int n,a[maxn][maxn];
+int main()
+{
+	scanf("%d",&n);
+	a[0][n/2]=1;
+	int r=0,c=n/2;
+	for(int i=2;i<=n*n;i++)
+	{
+		if(r==0&&c!=n-1) a[r=n-1][++c]=i;
+		else if(c==n-1&&r!=0) a[--r][c=0]=i;
+		else if(r==0&&c==n-1) a[++r][c]=i;
+		else
+		{
+			if(!a[r-1][c+1]) a[--r][++c]=i;
+			else a[++r][c]=i;
+		}
+	}
+	for(int i=0;i<n;i++)
+	{
+		for(int j=0;j<n;j++) printf("%d ",a[i][j]);
+		printf("\n");
+	}
+	return 0;
+}