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  1. A= input()
  2. B= input()
  3. k= 0
  4. x= A
  5. while x<=B:
  6. if x%7==0:
  7. k=k+1
  8. x=x+1
  9. print k
Success #stdin #stdout 0.01s 7384KB
stdin
6
77
stdout
11