#include<stdio.h>
void main(){
char pattern;
int i,j,k,b;
printf(":");scanf("%c",&pattern);
printf(":");scanf("%d",&b);
for(i=1;i<=b;i++)
{
for(k=b;k>=i;k--)
printf(" ");
for(j=1;j<i+i;j++)
printf("%c",pattern);
printf("\n");
}
for(i=b-1;i>=1;i--)
{
for(k=i;k<=b;k++)
printf(" ");
for(j=i+i;j>1;j--)
printf("%c",pattern);
printf("\n");
}
}










