from pypinyin import lazy_pinyin
import random
import pickle
d = {}
with open("idiom.txt","r") as f:
    for line in f:
        captial_py = lazy_pinyin(line)
        if captial_py[0] in d:
            d[captial_py[0]].append(line.replace("\n",""))
        else:
            d[captial_py[0]] = [line.replace("\n","")]
pickle.dump(d, open("idiom.pk","wb"))
while True:
    a = input()
    out = d[lazy_pinyin(a[-1])[0]]
    out = out[random.randint(0,len(out) - 1)]
    print(out)