quanthill.py

from collections import namedtuple

Days = namedtuple("Days", ("buy", "sell"))


def find_profit_days(n: int, prices: list[int]) -> Days:
    min_price = prices[0]
    max_profit = 0
    buy_day = 1
    sell_day = 1

    for day in range(1, n):
        if prices[day] < min_price:
            min_price = prices[day]
            buy_day = day + 1
        elif prices[day] - min_price > max_profit:
            max_profit = prices[day] - min_price
            sell_day = day + 1

    if max_profit == 0:
        return Days(buy=0, sell=0)

    return Days(buy=buy_day, sell=sell_day)


if __name__ == '__main__':
    n = int(input())
    prices = list(map(int, input().split(",")))
    result = find_profit_days(n=n, prices=prices)
    print(result.buy, result.sell)