# Write your Python code here
for i in range (5):
  print ("calculate grade")
  marks = int(input("name:"))

  if marks <45:
    grade="fail"
  elif marks <=60:
    grade="c"
  elif marks <=80:
    grade="b"
  elif marks <=100:
    grade="A"
  else:
    grade="excellent"

  print ('your marks is:',marks)
  print ('your grade is:',grade)