import math
class Date:
    def __init__(self,day,month,year):
        dni = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
        if(day>dni[month-1] or day<1 or type(day)==float):
            raise ValueError('Nie ma takiego dnia w tym miesiacu ! ')
        if(year<0 or type(year)==float):
            raise ValueError("Podales zly rok ! ")
        if(month<0 or month>12 or type(month)==float):
            raise ValueError("Podales zly miesiac")
        self.dzien= day
        self.miesiac= month
        self.rok = year
    def isleap(self):
        if self.rok%4==0:
            return True
        else:
            return False
    def days(self):
        wynik=(self.rok-1)*365
        przestepne=math.floor((self.rok-1)/4)
        wynik+=przestepne
        dni = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
        for i in range(self.miesiac-1):
            wynik+=dni[i-1]
        wynik+=self.dzien
        if(self.isleap()==True):
            wynik+=1
        return wynik-1
    def __str__(self):
        miesiace=["Styczen", "Luty", "Marzec", "Kwiecien",
            "Maj", "Czerwiec", "Lipiec", "Sierpien","Wrzesien", "Pazdziernik", "Listopad", "Grudzien"]
        return '{} {} {}'.format(self.dzien, miesiace[self.miesiac-1], self.rok)
    def __eq__(self, otherdate):
        return (self.dzien==otherdate.dzien and self.miesiac==otherdate.miesiac and self.rok==otherdate.rok)
    def __lt__(self, other):
        if other.rok>self.rok:
            return False
        elif other.rok==self.rok and other.miesiac>self.miesiac:
            return False
        elif other.rok==self.rok and other.miesiac==self.miesiac and other.dzien>self.dzien:
            return False
        else:
            return True
    def __sub__(self,other_date):
        a=self.days()
        b=other_date.days()
        if self>other_date:
            return b-a
        else:
            return a-b
    def __add__(self, days):
        m=self.miesiac
        r=self.rok
        d=self.dzien
        dni = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
        if days>0:
            for i in range (days):
               if(d==dni[m-1]) :
                   d=0
                   m=m+1
               if (m>12):
                   r+=1
                   m=1
               d+=1
        else:
            for i in range(math.abs(days)-1):
                if (m == 1 and d == 0):
                    m = 12
                    r -= 1
                    d = dni[11]+1
                if (d == 0):
                    m-=1
                    d = dni[m]
                    m = m + 1
                d -= 1
        self.miesiac=m
        self.rok=r
        self.dzien=d
        return self

data1=Date(25,2,1997)
d=data1.days()
data2=Date(24,2,1997)
print(data1<data2)
print(data1==data2)
print(d)
print(data1+10)