M-ColocviuPython-Ex2

from collections import defaultdict

if __name__ == '__main__':
    f = open('input.in', 'r')
    n = int(f.readline())

    d = defaultdict(lambda: [])

    for i in range(n):
        line = f.readline()
        # observ ca sunt mai multe spatii intre nume si data astfel despart dupa 2 spatii
        nume, data = line.split('  ')
        zi, luna, an = data.split('-')
        an = an.strip()

        d[luna].append(tuple([nume, zi, luna, an]))

    for luna in d.keys():
        # o sa-mi asum ca sambata cade pe 6, 13, 20, 27
        s1, s2, s3, s4 = [], [], [], []
        # pentru toti cei care sunt nascutii in aceeasi luna
        for om in d[luna]:
            if 0 <= int(om[1]) <= 6:
                s1.append(om)
            elif 7 <= int(om[1]) <= 13:
                s2.append(om)
            elif 14 <= int(om[1]) <= 20:
                s3.append(om)
            elif 21 <= int(om[1]):
                s4.append(om)

        if len(s1) != 0:
            print('06-' + luna + '-2021')
            for om in s1:
                print(om, sep=' ', end='\n')

        if len(s2) != 0:
            print('13-' + luna + '-2021')
            for om in s2:
                print(om, sep=' ', end='\n')

        if len(s3) != 0:
            print('20-' + luna + '-2021')
            for om in s3:
                print(om, sep=' ', end='\n')

        if len(s4) != 0:
            print('27-' + luna + '-2021')
            for om in s4:
                print(om, sep=' ', end='\n')