rno = int(input("Enter your roll no :- "))
name = input("Enter your name :- ")
s1 = int(input("Enter the mark of Subject 1 :-  "))
s2 = int(input("Enter the mark of Subject 2 :-  "))
s3 = int(input("Enter the mark of Subject 3 :-  "))
s4 = int(input("Enter the mark of Subject 4 :-  "))
s5 = int(input("Enter the mark of Subject 5 :-  "))
tot = s1+s2+s3+s4+s5
perc = tot//5
print("Roll no :- ",rno)
print("Name is :- ",name)
print("Total marks :-",tot)
print("Percentage is :- ",perc)
if perc>=90:
    print("Grade A")
elif perc>=80:
    print("Grade B")
elif perc>=70:
    print("Grade C")
elif perc>=50:
    print("Grade D")
elif perc>=35:
    print("Grade E")
elif perc<35:
    print("Grade F")
else:
    print("Please Enter proper value......")