Snowballss

def calculate_snowball_value(weight, time, quality):
    return (weight / time) ** quality

N = int(input())
highest_value = 0
best_snowball = None

for _ in range(N):
    weight = int(input())
    time = int(input())
    quality = int(input())

    snowball_value = calculate_snowball_value(weight, time, quality)

    if snowball_value > highest_value:
        highest_value = snowball_value
        best_snowball = (weight, time, quality)

snowball_weight, snowball_time, snowball_quality = best_snowball
print(f"{snowball_weight} : {snowball_time} = {int(highest_value)} ({snowball_quality})")