marks=[]
    s=[]
    for _ in range(int(input())):
        name = input()
        score = float(input())      
        m=[]
        m.append(name)
        m.append(score)
        s.append(score)
        marks.append(m)
        
    s=list(sorted(set(s)))
    second_min=s[1]
    sec=[]
    for i in marks:
        if i[1]==second_min:
            sec.append(i[0])
    sec.sort()
    for i in sec:
        print(i)