import math

grape_area = int(input())
grapes_per_m = float(input())
wine_grape_needed = int(input())
workers = int(input())

total_grape_quant = grape_area * grapes_per_m
grape_for_wine = total_grape_quant * 0.4 / 2.5

if grape_for_wine >= wine_grape_needed:
    print(f"Good harvest this year! Total wine: {math.floor(grape_for_wine)} liters.")
    wine_left = grape_for_wine - wine_grape_needed
    print(f"{math.ceil(wine_left)} liters left -> {math.ceil(wine_left / workers)} liters per person.")
else:
    print(f"It will be a tough winter! More {math.floor(wine_grape_needed - grape_for_wine)} liters wine needed.")