# Write your Python code here
print("Hello, Excelrs!")

gradelist = []

for i in range(3):
    marks = input ("Enter your marks\n")
    print(marks)

    marksInt = int(marks)

    grade = ''
    
    if marksInt <40:
       grade = 'D'
    elif marksInt <60:
       grade = 'C'
    elif marksInt <80:
       grade = 'B'
    else:
        grade = 'A'

    print("your grade is ")
    print(grade)
    gradelist.append(grade)

print(gradelist)