for each in 'fishc':
    print(each)
sum=0
for i in range(1000001):
    sum +=i
print(sum)
for n in range(2,10):
	for x in range(2,n):
		if n%x==0:
			print(n,"=",x,"*",n//x)
			break
	else:
		print(n,"是一个素数")