#include <stdio.h>
int main(void) {
int n;
printf("Enter the number of rows: \n");
int nst=n-1;
int nsp=1;
for(int r=1;r<=2*n-1;r++)
for(int i=1;i<=n;i++){
for(int j=1;j<=nst;j++)
for(int k=1;k<=nsp;k++)
for(int j=1;j<=nst;j++)
nst--;
nsp+=2;
}
return 0;
}
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