5.py

import os


#initial
def getSeat(text):
    row = 0
    col = 0

    rowCode = text[0:7]
    colCode = text[7:10]

    rowCode = rowCode.replace("F","0")
    rowCode = rowCode.replace("B","1")
    row = int(rowCode, 2)

    colCode = colCode.replace("L","0")
    colCode = colCode.replace("R","1")
    col = int(colCode, 2)
    
    #print(text,rowCode,colCode,str(row),str(col), str(row * 8 + col))

    return row, col

with open("5.txt") as file:
    total = 0
    valid = 0
    invalid = 0

    #print(getSeat("FBFBBFFRLR\n"))

    lines = file.readlines() 
    seats = []
    rows = {}
    for line in lines:
        (row, col) = getSeat(line)
        if row in rows:
            rows[row] = rows[row] + 1
        else:
            rows[row] = 1
        seats.append(row * 8 + col)
        total = total + 1

    seats.sort(reverse=True)
    print(seats[0], total)

    #part 2
    myRow = []
    for key in rows:
        #print(key, str(rows[key]))
        if rows[key] < 8:
            myRow.append(key)
    myRow.sort()
    if len(myRow) > 1:
        myRow = myRow[1]
    else:
        myRow = myRow[0]

    for i in range(8):
        seatId = myRow * 8 + i
        if seatId not in seats:
            print(seatId)
            break