from operator import itemgetter, attrgetter
if __name__ == '__main__':
    lista1=[]
    lista3=[]
    count=0
    for _ in range(int(input())):
        name = input()
        score = float(input())
        lista1.append([name,score])
    lista2=sorted(lista1, key=itemgetter(1))
    lista3.append(lista2[1][0])
    while True:
        j=1
        for i in range(len(lista2)):
            if i+1==len(lista2):
                    break
            elif lista2[i][j]==lista2[i+1][j]:
                lista3.append(lista2[i+1][0])
                count+=1
        lista3.sort()
        for z in range(len(lista3)):
            print(lista3[z])
        break