if __name__ == '__main__':
   
    nested_list=[]
    
    for _ in range(int(input())):
        name = input()
        score = float(input())

        nested_list.append([name, score])
  
    unique_sorted_list = sorted(list(set(x[1] for x in nested_list)))   
    second_lowest =unique_sorted_list[1]
    
    low_grades_list = []
    for student in nested_list:
        if second_lowest == student[1]: 
            low_grades_list.append(student[0])
		 # Print all students with second low grades        
    for student in sorted(low_grades_list):
            print(student)