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@kotas kotas/ec_campaign.py
Last active Dec 30, 2015

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# -*- coding: utf-8 -*-
try:
import bisect
except:
pass
def main():
(num_items, num_days) = map(int, raw_input().split())
prices = sorted(int(raw_input()) for n in xrange(num_items))
goals = (int(raw_input()) for n in xrange(num_days))
for goal in goals:
print find_closest(goal, prices)
def find_closest(goal, prices):
closest = 0
maximum = prices[-1]
first_prices = slice_prices(prices, max_price = goal)
for first_price in first_prices:
if first_price + maximum < closest:
break
second_price = find_second_price(prices, max_price = goal - first_price, except_once = first_price)
if second_price:
current_price = first_price + second_price
if current_price == goal:
return goal
elif current_price > closest:
closest = current_price
return closest
def slice_prices(prices, max_price):
right = bisect.bisect_right(prices, max_price)
for n in xrange(right - 1, -1, -1):
yield prices[n]
def find_second_price(prices, max_price, except_once):
for price in slice_prices(prices, max_price):
if price == except_once:
except_once = None
else:
return price
main()
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