if __name__ == '__main__':
    records = []
    for _ in range(int(input())):
        name = input()
        score = float(input())
        records.append([name, score])
    scores = [s for n, s in records]
    second_min = sorted(set(scores))[1]
    names=[n for n,s in records if s==second_min]
    names.sort()
    for name in names:
        print(name)