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

grades = []
for n in range(len(nestedlist)):
    grades.append(nestedlist[n][1])

unique_grades = set(grades)         
list_of_unique_grades = list(unique_grades)
sorted_unique_grades = sorted(list_of_unique_grades)

secondlowest = sorted_unique_grades[1]

finalnames = []
for n in range(len(nestedlist)):
    if nestedlist[n][1] == secondlowest:
        finalnames.append(nestedlist[n][0])

finalnames_sorted = sorted(finalnames)

for n in range(len(finalnames_sorted)):
    print(finalnames_sorted[n])