交叉表：性别与生还

def solve():
    import pandas as pd
    import matplotlib.pyplot as plt
    url = '____'
    df = pd.read_csv(____)
    ct = pd.crosstab(____)
    ct.columns = ['____','____']
    print(____)
    print(ct.div(ct.sum(____), axis=____).mul(____).round(____))
    ct.plot(____)
    plt.xlabel(____); plt.ylabel(____); plt.title(____)
    plt.xticks(____); plt.tight_layout(); plt.show()