~cpp
if __name__=='__main__':
n=raw_input(':')
k=input(' 길 :')
for x in range(1,2*k,2):
print ' ' * ((2*k-x)/2),
print 'n'* x
for x in range(1,2*(k-1),2)[::-1]:
print ' ' * ((2*k-x)/2),
print 'n'* x










