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kukemuna-cs50/problems/2024/x/fiftyville@20240328T212805.227868444Z

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bot50 2024-03-28 21:28:05 +00:00
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3
answers.txt Normal file
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The THIEF is: Bruce
The city the thief ESCAPED TO: New York City
The ACCOMPLICE is: Robin

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log.sql Normal file
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-- Keep a log of any SQL queries you execute as you solve the mystery.
-- Get overview of available data (tables)
.tables
-- airports crime_scene_reports people
-- atm_transactions flights phone_calls
-- bakery_security_logs interviews
-- bank_accounts passengers
-- Get structure of crime_scene_reports
.schema crime_scene_reports
-- id INTEGER,
-- year INTEGER,
-- month INTEGER,
-- day INTEGER,
-- street TEXT,
-- description TEXT,
-- PRIMARY KEY(id)
-- All you know is that the theft took place on July 28, 2023 and that it took place on Humphrey Street.
SELECT description FROM crime_scene_reports
WHERE year = 2023 AND month = 7 AND day = 28
AND street = 'Humphrey Street';
-- Theft of the CS50 duck took place at 10:15am at the Humphrey Street bakery. Interviews were conducted today with three witnesses who were present at the time –
-- each of their interview transcripts mentions the bakery.
-- Littering took place at 16:36. No known witnesses.
-- Get structure of interviews
.schema interviews
-- id INTEGER,
-- name TEXT,
-- year INTEGER,
-- month INTEGER,
-- day INTEGER,
-- transcript TEXT,
-- PRIMARY KEY(id)
-- Get transcripts from the same day with mentions to bakery
SELECT transcript FROM interviews
WHERE year = 2023 AND month = 7 AND day = 28
AND transcript LIKE '%bakery%';
-- Sometime within ten minutes of the theft, I saw the thief get into a car in the bakery parking lot and drive away. If you have security footage from the bakery parking lot,
-- you might want to look for cars that left the parking lot in that time frame.
-- I don't know the thief's name, but it was someone I recognized. Earlier this morning, before I arrived at Emma's bakery, I was walking by the ATM on Leggett Street
-- and saw the thief there withdrawing some money.
-- As the thief was leaving the bakery, they called someone who talked to them for less than a minute. In the call, I heard the thief say that they were planning to take
-- the earliest flight out of Fiftyville tomorrow. The thief then asked the person on the other end of the phone to purchase the flight ticket.
-- Get structure of bakery_security_logs
.schema bakery_security_logs
-- id INTEGER,
-- year INTEGER,
-- month INTEGER,
-- day INTEGER,
-- hour INTEGER,
-- minute INTEGER,
-- activity TEXT,
-- license_plate TEXT,
-- PRIMARY KEY(id)
-- Get licence plates of leaving customers from within 10 minutes of theft (10:15am)
SELECT license_plate FROM bakery_security_logs
WHERE year = 2023 AND month = 7 AND day = 28 AND hour = 10 AND minute BETWEEN 5 AND 25
AND activity = 'exit';
-- 5P2BI95
-- 94KL13X
-- 6P58WS2
-- 4328GD8
-- G412CB7
-- L93JTIZ
-- 322W7JE
-- 0NTHK55
-- Get structure of atm_transactions
.schema atm_transactions
-- id INTEGER,
-- account_number INTEGER,
-- year INTEGER,
-- month INTEGER,
-- day INTEGER,
-- atm_location TEXT,
-- transaction_type TEXT,
-- amount INTEGER,
-- PRIMARY KEY(id)
-- Get account numbers of withdrawals from Leggett Street ATM on the day of theft
SELECT account_number FROM atm_transactions
WHERE year = 2023 AND month = 7 AND day = 28
AND atm_location = 'Leggett Street' AND transaction_type = 'withdraw';
-- 28500762
-- 28296815
-- 76054385
-- 49610011
-- 16153065
-- 25506511
-- 81061156
-- 26013199
-- Get structure of phone_calls
.schema phone_calls
-- id INTEGER,
-- caller TEXT,
-- receiver TEXT,
-- year INTEGER,
-- month INTEGER,
-- day INTEGER,
-- duration INTEGER,
-- PRIMARY KEY(id)
-- Get caller and receiver of calls with duration under a minute
SELECT caller FROM phone_calls
WHERE year = 2023 AND month = 7 AND day = 28
AND duration < 60;
-- Caller | Receiver
-- (130) 555-0289 | (996) 555-8899
-- (499) 555-9472 | (892) 555-8872
-- (367) 555-5533 | (375) 555-8161
-- (499) 555-9472 | (717) 555-1342
-- (286) 555-6063 | (676) 555-6554
-- (770) 555-1861 | (725) 555-3243
-- (031) 555-6622 | (910) 555-3251
-- (826) 555-1652 | (066) 555-9701
-- (338) 555-6650 | (704) 555-2131
-- Get structure of flights
.schema flights
-- id INTEGER,
-- origin_airport_id INTEGER,
-- destination_airport_id INTEGER,
-- year INTEGER,
-- month INTEGER,
-- day INTEGER,
-- hour INTEGER,
-- minute INTEGER,
-- PRIMARY KEY(id),
-- FOREIGN KEY(origin_airport_id) REFERENCES airports(id),
-- FOREIGN KEY(destination_airport_id) REFERENCES airports(id)
-- Get structure of airports
.schema airports
-- id INTEGER,
-- abbreviation TEXT,
-- full_name TEXT,
-- city TEXT,
-- PRIMARY KEY(id)
-- Get structure of passengers
.schema passengers
-- flight_id INTEGER,
-- passport_number INTEGER,
-- seat TEXT,
-- FOREIGN KEY(flight_id) REFERENCES flights(id)
-- Get passengers (passport_number) of earliest flight out of Fiftyville the next day
SELECT passport_number FROM passengers
WHERE flight_id IN (
SELECT flights.id FROM flights
JOIN airports ON flights.origin_airport_id = airports.id
WHERE year = 2023 AND month = 7 AND day = 29
AND city = 'Fiftyville'
ORDER BY hour LIMIT 1
);
-- 7214083635
-- 1695452385
-- 5773159633
-- 1540955065
-- 8294398571
-- 1988161715
-- 9878712108
-- 8496433585
-- Get destination airport for that flight
SELECT city FROM airports
WHERE id IN (
SELECT destination_airport_id FROM flights
JOIN airports ON flights.origin_airport_id = airports.id
WHERE year = 2023 AND month = 7 AND day = 29
AND city = 'Fiftyville'
ORDER BY hour LIMIT 1
);
-- New York City
-- Get structure of people
.schema people
-- id INTEGER,
-- name TEXT,
-- phone_number TEXT,
-- passport_number INTEGER,
-- license_plate TEXT,
-- PRIMARY KEY(id)
-- Get structure of bank_accounts
.schema bank_accounts
-- account_number INTEGER,
-- person_id INTEGER,
-- creation_year INTEGER,
-- FOREIGN KEY(person_id) REFERENCES people(id)
-- Get the name of the thief and a phone number of accomplice
SELECT name, receiver FROM people
JOIN bank_accounts ON people.id = bank_accounts.person_id
JOIN phone_calls ON people.phone_number = phone_calls.caller
WHERE license_plate IN ( -- Licence plates of leaving customers from within 10 minutes of theft (10:15am)
SELECT license_plate FROM bakery_security_logs
WHERE year = 2023 AND month = 7 AND day = 28 AND hour = 10 AND minute BETWEEN 5 AND 25
AND activity = 'exit'
)
AND passport_number IN ( -- Ppassport numbers of people on earliest flight out of Fiftyville the next day
SELECT passport_number FROM passengers
WHERE flight_id IN (
SELECT flights.id FROM flights
JOIN airports ON flights.origin_airport_id = airports.id
WHERE year = 2023 AND month = 7 AND day = 29
AND city = 'Fiftyville'
ORDER BY hour LIMIT 1
)
AND phone_number IN ( -- Caller numbers with duration under a minute
SELECT caller FROM phone_calls
WHERE year = 2023 AND month = 7 AND day = 28
AND duration < 60
)
AND account_number IN ( -- Account numbers of withdrawals from Leggett Street ATM on the day of theft
SELECT account_number FROM atm_transactions
WHERE year = 2023 AND month = 7 AND day = 28
AND atm_location = 'Leggett Street' AND transaction_type = 'withdraw'
)
AND day = 28 AND duration < 60
);
-- Bruce
-- Get the name of the accomplice
SELECT name FROM people
WHERE phone_number IN (
SELECT receiver FROM people
JOIN bank_accounts ON people.id = bank_accounts.person_id
JOIN phone_calls ON people.phone_number = phone_calls.caller
WHERE license_plate IN ( -- Licence plates of leaving customers from within 10 minutes of theft (10:15am)
SELECT license_plate FROM bakery_security_logs
WHERE year = 2023 AND month = 7 AND day = 28 AND hour = 10 AND minute BETWEEN 5 AND 25
AND activity = 'exit'
)
AND passport_number IN ( -- Ppassport numbers of people on earliest flight out of Fiftyville the next day
SELECT passport_number FROM passengers
WHERE flight_id IN (
SELECT flights.id FROM flights
JOIN airports ON flights.origin_airport_id = airports.id
WHERE year = 2023 AND month = 7 AND day = 29
AND city = 'Fiftyville'
ORDER BY hour LIMIT 1
)
AND phone_number IN ( -- Caller numbers with duration under a minute
SELECT caller FROM phone_calls
WHERE year = 2023 AND month = 7 AND day = 28
AND duration < 60
)
AND account_number IN ( -- Account numbers of withdrawals from Leggett Street ATM on the day of theft
SELECT account_number FROM atm_transactions
WHERE year = 2023 AND month = 7 AND day = 28
AND atm_location = 'Leggett Street' AND transaction_type = 'withdraw'
)
AND day = 28 AND duration < 60
)
);
-- Robin