import random as r
def x(n):
w=range(-n,n+1)
for i in w:
o=''
for j in w:
c=r.randint(33,124)
c+=(c>88)+(c>119)
if i^j and i^-j:c=32
o+=chr(c)
print o
x(10)
aW1wb3J0IHJhbmRvbSBhcyByCmRlZiB4KG4pOgogdz1yYW5nZSgtbixuKzEpCiBmb3IgaSBpbiB3OgogIG89JycKICBmb3IgaiBpbiB3OgogICBjPXIucmFuZGludCgzMywxMjQpCiAgIGMrPShjPjg4KSsoYz4xMTkpCiAgIGlmIGleaiBhbmQgaV4tajpjPTMyCiAgIG8rPWNocihjKQogIHByaW50IG8KCngoMTAp