~cpp
if __name__ == '__main__':
a=str(raw_input("패턴 입력: "))
b=int(input("변의 길이 입력: "))
l=[0]
stack=[]
for n in range(b*2-1):
l.insert(n," ")
l.insert(b-1,a)
for m in range(b):
for n in range(b*2-1):
print l[n],
l[b-m-2]=a
l[b+m]=a
print ""
for m in range(b-1):
l[m]=" "
l[b+b-2-m]=" "
for n in range(b*2-1):
print l[n],
print ""