import random
m = 0
c7 = 0
c77 = 0
c777 = 0
for j in range(1000):
n = []
for i in range(3):
n.append(random.randint(0, 9))
print(n)
n7 = n.count(7)
# print(n7)
m = m - 40
if n7 == 1:
m = m + 60
c7+=1
if n7 == 2:
m = m + 600
c77+=1
if n7 == 3:
m = m + 6000
c777+=1
print('$',m)
print()
print('$',m)
print('777:',c777,'次')
print('77:',c77,'次')
print('7:',c7,'次')
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