Snowballs

n = int(input())
balls = []
snows = []
times = []
qualities = []
for i in range(n):
  snow = int(input())
  time = int(input())
  quality = int(input())
  value = (snow / time) ** quality
  balls.append(value)
  snows.append(snow)
  times.append(time)
  qualities.append(quality)

winner_ball = max(balls)
winner_snow = snows[balls.index(winner_ball)]
winner_time = times[balls.index(winner_ball)]
winner_quality = qualities[balls.index(winner_ball)]

print(f'{winner_snow} : {winner_time} = {winner_ball:.0f} ({winner_quality})')