import pandas as pd

import matplotlib.pyplot as plt

import seaborn as sns

titanic $=$ # load titanic.csv

first$\_$south $=$ # subset the titanic dataset to include first class passengers who embarked in Southampton

second$\_$third $=$ # subset the titanic dataset to include either second or third class passengers

print$($first$\_$south.head$())$

print$($second$\_$third.head$())$

# Set the style of the bar charts

sns$.$set$\_$theme$($style$=$"whitegrid", color$\_$codes$=$True$)$

# Create a bar chart for the first class passengers who embarked in Southampton grouped by sex

# Your code here

plt$.$savefig$(\text{'}$bar$\_1.$png$\text{'})$

# Create a bar chart for the second and third class passengers grouped by survival status

# Your code here

plt$.$legend$($labels$=["0","1"],$ title $=$ "survived"$)$

plt$.$savefig$(\text{'}$bar$\_2.$png$\text{'})$