euler19

m1 = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
m2 = [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
mon_sy = {
    1: "January", 2: "February", 3: "March", 4: "April", 5: "May", 6: "June",
    7: "July", 8: "August", 9: "September", 10: "October", 11: "November",
    12: "December"}
leap = [year for year in range(1904, 2001, 4)]


def months():
    for year in range(1901, 2001):
        if year in leap:
            for i, month in enumerate(m2):
                yield year, i, month
        else:
            for i, month in enumerate(m1):
                yield year, i, month
day = sum(m1) % 7
sundays = 0
for year, mon, days in months():
    if day == 6:
        sundays = sundays + 1
        print year, mon_sy[mon + 1]
    day = day + days
    day = day % 7
print sundays