N=input()+1
z=(N+3)/2
s=" "*(z-3)
print s," \\ /\n"+s+"-->*<--"
i=1
n=N
while n:f=(n+N)%2;print" "*(z-i)+"/"+["/","\\"][f].join(["_"]*i)+"\\";i+=f or i<3;n-=1
print s,"[___]"