#链接
http://pat.zju.edu.cn/contests/pat-a-practise/1035
#知识点
- python string 的连接用 +=
#样例代码1
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25n = int(raw_input())
d={'1':'@','0':'%','l':'L','O':'o'}
r=[]
def check(p):
s=''
for i in p:
if d.has_key(i):
s += d[i]
else:
s += i
return s
for i in range(n):
(name,password) = (x for x in raw_input().split())
if password != check(password):
r.append([name,check(password)])
if len(r) == 0:
if n==1:
print "There is 1 account and no account is modified"
else:
print "There are %d accounts and no account is modified"%n
else:
print len(r)
for item in r:
print item[0],item[1]