09. Ski Trip

night = int(input()) - 1
room = input()
rating = input()

total = 0

if room == "room for one person":
    total = night * 18
elif room == "apartment":
    total = night * 25
    if night < 10:
        total *= 0.7
    elif 10 <= night < 15:
        total *= 0.65
    else:
        total *= 0.5
elif room == "president apartment":
    total = night * 35
    if night < 10:
        total *= 0.9
    elif 10 <= night < 15:
        total *= 0.85
    else:
        total *= 0.8

if rating == "positive":
    total *= 1.25
else:
    total *= 0.9

print(f'{total:.2f}')

РЕШЕНИЕ С IF-ELSE И ТЕРНАРЕН ОПЕРАТОР:

night = int(input()) - 1
room = input()
rating = input()

total = 0

if room == "room for one person":
    total = night * 18
elif room == "apartment":
    total = night * 25 * (0.7 if night < 10 else 0.65 if 10 <= night < 15 else 0.5)
elif room == "president apartment":
    total = night * 35 * (0.9 if night < 10 else 0.85 if 10 <= night < 15 else 0.8)

total *= 1.25 if rating == "positive" else 0.9

print(f'{total:.2f}')

РЕШЕНИЕ САМО С ТЕРНАРЕН ОПЕРАТОР:

night = int(input()) - 1
room = input()
rating = input()

total = night * (18 if room == "room for one person" else
                 25 * (0.7 if night < 10 else 0.65 if 10 <= night < 15 else 0.5) if room == "apartment" else
                 35 * (0.9 if night < 10 else 0.85 if 10 <= night < 15 else 0.8)) * (1.25 if rating == "positive" else 0.9)

print(f'{total:.2f}')

PЕШЕНИЕ С КОЛЕКЦИЯ И ТЕРНАРЕН ОПЕРАТОР:

night = int(input()) - 1
room = input()
rating = input()

total = night * {"room for one person": {night > 0: 18},
                 "apartment": {night < 10: 25 * 0.7, 10 <= night < 15: 25 * 0.65, night >= 15: 25 / 2},
                 "president apartment": {night < 10: 35 * 0.9, 10 <= night < 15: 35 * 0.85, night >= 15: 35 * 0.8}}[room][True]

total *= 1.25 if rating == "positive" else 0.9

print(f'{total:.2f}')