s = input()
c = s.count(',')
if c > 1:
    print('Not is float')
else:
    test = True
    for i in range(len(s)):
        if (i > 0):
            if ((s[i] > '9')or(s[i] < '0'))and(s[i] != ','):
                test = False
    if test:
        print('Is float')
    else:
        print('Is not float')