if __name__ == '__main__':
    # Store the names and scores in a list
    students = []
    for _ in range(int(input())):
        name = input()
        score = float(input())
        students.append([name, score])
    
    # Sort the list of students based on scores
    students.sort(key=lambda x: x[1])
    
    #assign the the second lowest value to a variable
    second_lowest_score = None
    for student in students:
        if second_lowest_score is None:
            second_lowest_score = student[1]
        elif student[1] > second_lowest_score:
            second_lowest_score = student[1]
            break
    
    # Create a list for names of students with the second lowest score
    second_lowest_names = []
    
    # Find the names corresponding to the second lowest score and add them to the list
    for student in students:
        if student[1] == second_lowest_score:
            second_lowest_names.append(student[0])
    
    # Sort the list of names alphabetically
    second_lowest_names.sort()
    
    # Print the names from the list of names with the second lowest score
    for name in second_lowest_names:
        print(name)