Guess Birthday

def main():
    day = 0 # Day to be determined

    dates = [
        [
            [1, 3, 5, 7],
            [9, 11, 13, 15],
            [17,19, 21, 23],
            [25, 27, 29, 31]
        ],
        [
          [2, 3, 6, 7],
          [10, 11, 14, 15],
          [18, 19, 22, 23],
          [26, 27, 30, 31]
        ],
        [
          [4, 5, 6, 7],
          [12, 13, 14, 15],
          [20, 21, 22, 23],
          [28, 29, 30, 31]
        ],
        [
           [8, 9, 10, 11],
           [12, 13, 14, 15],
           [24, 25, 26, 27],
           [28, 29, 30, 31]
        ],
        [
            [16, 17, 18, 19],
            [20, 21, 22, 23],
            [24, 25, 26, 27],
            [29, 29, 30, 31]
        ]
    ]

    for i in range(5):
        print("Is your birthday in Set" + str(i + 1)+ "?")
        for j in range(4):
            for k in range(4):
                print(format(dates[i][j][k], "4d"), end = " ")
            print()

        answer = eval(input("Enter 0 for No and 1 for Yes: "))

        if answer == 1:
            day += dates[i][0][0]

    print("Your birthday is "+ str(day))

main() # call the main function