~cpp
if __name__=='__main__':
n=raw_input('패턴입력:')
k=input('변의 길이 입력:')
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