if __name__ == '__main__':
    records = []
    for _ in range(int(input())):
        name = input()
        score = float(input())
        records.append([name, score])

    # Step 2: Extract grades and find second lowest unique grade
    grades = sorted(set([score for name, score in records]))  # Get unique grades and sort them
    
    # Step 3: Get the second lowest grade
    second_lowest = grades[1]  # The second unique grade
    
    # Step 4: Collect names of students with the second lowest grade
    second_lowest_students = [name for name, score in records if score == second_lowest]
    
    # Step 5: Sort names alphabetically
    second_lowest_students.sort()
    
    # Step 6: Print the names of students with the second lowest grade
    for student in second_lowest_students:
        print(student)