#3
a = int(input('please put a number here : '))

if a <= 100 and a >= 1 :
    if a%2 == 0 :
        print('its valid')
    else :
        print('its not valid')
else :
    print('its not valid')
 #-------------------------------------------
#4
a = int(input('please enter the amounts of stars * :'))
x=0
if(a >= 0):
    for x in range (1 , 1+a):
        print('*')
else:
    print('not valid')

#------------------------------------------
#5
a = int(input('please enter the ammount of students '))
if a >= 1 :
    f=list()
    for x in range (0 , 0+a) :
        f.append(input('please enter name '))
    f.sort()
    print(f)
else :
    print('not valid')
#-------------------------------------------------
#7
x = int(input('enter the number'))
if x<0: 
    print("not valid") 
elif x==0: 
    fi= 0
elif x==1: 
    fi= 1
else: 
    fi = fi(x-1)+fi(x-2) 

print(Fi)