##Example 1

year = int( input("Enter a year from 1900 to 2099. ") )

a=year%19
b=year%4
c=year%7
d=(19*a+24)%30
e=(2*b+4*c+6*d+5)%7
easter = 22 + d + e
easter2 = 0

if year == 1954 or year == 1981 or year == 2049 or year == 2076:
    easter2 = 22 + d + e - 7
    
elif year < 1900 or year > 2099:
    print("That year isn't in range. ")
else:
    easter = 22 + d + e
    

if easter == 46:
    print("April 15")
    
elif easter == 49:
    print("April 18")
    
elif easter2 == 49:
    print("April 18")
    
elif easter == 50:
    print("April 19")
    
elif easter2 == 50:
    print("April 19")
    
elif easter == 32:
    print("April 1")
    
elif easter == 31:
    print("March 31")
    
elif easter == 23:
    print("March 23")
    
elif easter == 43:
    print("April 12")


#########################

##Example 2

month = 0
year = int(input("Enter a year from 1900 to 2099. "))

if year<1900 or year>2099:
    print("That year isn't in range.")
    
if year>=1900 and year<=2099:
    a=year%19
    b=year%4
    c=year%7
    d=(19*a+24)%30
    e=(2*b+4*c+6*d+5)%7
    easter = 22 + d + e
    if year==1954 or year==1981 or year==2049 or year==2076:
        easter = easter-7
        
    if easter<=31:
        month = month+1
    else:
        month = month+2
            
if month==1:
    print("March",easter)
elif month==2:
    print("April",easter-31)

#########################

##Example 3

year = float(input("Enter a year from 1900 to 2099. "))

if year < 1900 or year > 2099:
    print("That year isn't in range.")
else:
    a=year%19
    b=year%4
    c=year%7
    d=(19*a+24)%30
    e=(2*b+4*c+6*d+5)%7
    easter = 22 + d + e
    if year == 1954 or year == 1981 or year == 2049 or year == 2076:
        easter = easter - 7
    if easter == 1:
        print("March 1")
    elif easter == 2:
        print("March 2")
    elif easter == 3:
        print("March 3")
    elif easter == 4:
        print("March 4")
    elif easter == 5:
        print("March 5")
    elif easter == 6:
        print("March 6")
    elif easter == 7:
        print("March 7")
    elif easter == 8:
        print("March 8")
    elif easter == 9:
        print("March 9")
    elif easter == 10:
        print("March 10")
    elif easter == 11:
        print("March 11")
    elif easter == 12:
        print("March 12")
    elif easter == 13:
        print("March 13")
    elif easter == 14:
        print("March 14")
    elif easter == 15:
        print("March 15")
    elif easter == 16:
        print("March 16")
    elif easter == 17:
        print("March 17")
    elif easter == 18:
        print("March 18")
    elif easter == 19:
        print("March 19")
    elif easter == 20:
        print("March 20")
    elif easter == 21:
        print("March 21")
    elif easter == 22:
        print("March 22")
    elif easter == 23:
        print("March 23")
    elif easter == 24:
        print("March 24")
    elif easter == 25:
        print("March 25")
    elif easter == 26:
        print("March 26")
    elif easter == 27:
        print("March 27")
    elif easter == 28:
        print("March 28")
    elif easter == 29:
        print("March 29")
    elif easter == 30:
        print("March 30")
    elif easter == 31:
        print("March 31")
    elif easter == 32:
        print("April 1")
    elif easter == 33:
        print("April 2")
    elif easter == 34:
        print("April 3")
    elif easter == 35:
        print("April 4")
    elif easter == 36:
        print("April 5")
    elif easter == 37:
        print("April 6")
    elif easter == 38:
        print("April 7")
    elif easter == 39:
        print("April 8")
    elif easter == 40:
        print("April 9")
    elif easter == 41:
        print("April 10")
    elif easter == 42:
        print("April 11")
    elif easter == 43:
        print("April 12")
    elif easter == 44:
        print("April 13")
    elif easter == 45:
        print("April 14")
    elif easter == 46:
        print("April 15")
    elif easter == 47:
        print("April 16")
    elif easter == 48:
        print("April 17")
    elif easter == 49:
        print("April 18")
    elif easter == 50:
        print("April 19")
    elif easter == 51:
        print("April 20")
    elif easter == 52:
        print("April 21")
    elif easter == 53:
        print("April 22")
    elif easter == 54:
        print("April 23")
    elif easter == 55:
        print("April 24")
    elif easter == 56:
        print("April 25")
    elif easter == 57:
        print("April 26")
    elif easter == 58:
        print("April 27")
    elif easter == 59:
        print("April 28")
    elif easter == 60:
        print("April 29")
    elif easter == 61:
        print("April 30")

#########################

##Example 4

#get info
year = int(input("Enter a year from 1900 to 2099. "))

#analyze
a = year%19
b = year%4
c = year%7
d = (19*a+24)%30
e = (2*b+4*c+6*d+5)%7
easter = 22 + d + e

sub = {1954,1981,2049,2076}

if year in sub:
   eastera = (easter - 7)
else:
    eastera = easter
    
#give info
if year <1900 or year >2099:
    print("isn't in range")
    
elif eastera <=31 and eastera >=1:
    print("March",eastera)

elif eastera <=61 and eastera >=32:
    print("April",eastera-31)