a,p=int(input()),print b=z=' '*(a//2) p(b+' \\ /\n'+b[1:]+'-->*<--\n'+b+' /_\\') c='__' y=1;exec(r"y^=1;b=b[y:];c+='_'*y;p(b+'/%s\\'%'\\/'[y].join(c));"*a) p(z+'[___]')
Note that non-ascii characters in the above source code will be escaped (such as \x9f).