Write a Program to Display the result of the Student with there Percentage and Grade

rno = int(input("Enter the roll no :- "))
name = input("Enter the name :- ")
sub1 = int(input("Enter the marks of English :- "))
sub2 = int(input("Enter the marks of English :- "))
sub3 = int(input("Enter the marks of English :- "))
sub4 = int(input("Enter the marks of English :- "))
sub5 = int(input("Enter the marks of English :- "))
tot = sub1+sub2+sub3+sub4+sub5
perc = tot//5
print("The Total marks is :- ",tot)
print("The Percentage is :- ",perc)
if perc>=90:
    print("Grade A")
elif perc>=80:
    print("Grade B")
elif perc>=60:
    print("Grade C")
elif perc>=50:
    print("Grade D")
elif perc >=35:
    print("Grade E")
else:
    print("Grade F")