import sys

# return if the sentence contains word pies
def solve(lines):
    return [l for l in lines if "pies" in l.lower().split(" ")]

if __name__ == "__main__":
    lines = []
    
    fp = sys.argv[1]
    with open(fp, encoding="utf-8") as f:
        lines = f.readlines()
    sol = solve(lines)
    with open("./polish_wiki_excerpt.out", 'w', encoding="utf-8") as f:
        f.writelines(sol)