# def cube(num):
#     return num*num*num
# a = float(input('enter the value'))
# b = cube(a)
# print(b)

# a = int(input('enter the value'))
# b = a**3
# print(b)
number = int(input('enter the value'))
    if number>0:
     print('positive')
    elif number<0:
     print('negative')
    else:
     print('non-negative')
