h = int(input())
up_per_day = int(input())
down_per_day = int(input())
total_per_day = up_per_day - down_per_day
time_to_get_to_min_h = (h - up_per_day + total_per_day - 1) // total_per_day
print(time_to_get_to_min_h + 1)

7ee16f0098c9048fefa6bb11aa07c5e4af4357c5
<mask token>

<mask token>
print(time_to_get_to_min_h + 1)

h = int(input())
up_per_day = int(input())
down_per_day = int(input())
total_per_day = up_per_day - down_per_day
time_to_get_to_min_h = (h - up_per_day + total_per_day - 1) // total_per_day
print(time_to_get_to_min_h + 1)
