records = []
if __name__ == '__main__':
    for _ in range(int(input())):
        name = input()
        score = float(input())
        records.append([name, score])
    
    records.sort(key=lambda x: (x[1], x[0]))
    
    lowest_score = records[0][1]
    
    second_lowest_score = None
    for name, score in records:
        if score > lowest_score:
            second_lowest_score = score
            break
    
    second_lowest_names = [name for name, score in records if score == second_lowest_score]
    
    second_lowest_names.sort()
    
    for name in second_lowest_names:
        print(name)