G.py

def main():
    n = int(input())
    products = [input() for _ in range(n)]

    manufacturer_rating = {}
    for i in range(n):
        manufacturer, _ = products[i].split()
        current_rating = manufacturer_rating.get(manufacturer, -1)
        manufacturer_rating[manufacturer] = max(current_rating, i)
    best_manufacturer, _ = min(manufacturer_rating.items(), key=lambda m: m[1])

    print(best_manufacturer)


if __name__ == "__main__":
    main()