#!/usr/bin/python3
import loader
inp = loader.integer_list("input_day9")
def is_sum_of_two(candidate_list, target_number):
"""
Determines whether target_number is the sum of two distinct elements of
a list of numbers.
Mandatory arguments:
* candidate_list - a list of integers that may be added together.
* target_number - the desired sum
Returns True if target_number is the sum of two distinct elements of the
list, or False otherwise.
"""
for i in range(len(candidate_list)-1):
for j in range(i+1,len(candidate_list)):
if candidate_list[i] + candidate_list[j] == target_number:
return True
return False
for i in range(25,len(inp)):
candidate_list = inp[(i-25):i]
target_number = inp[i]
if not is_sum_of_two(candidate_list,target_number):
print(target_number)
exit(0)
#!/usr/bin/python3
import loader
expense_report = loader.integer_list('input_day1')
for expense_1 in expense_report:
for expense_2 in expense_report:
if expense_1 != expense_2 and expense_1 + expense_2 == 2020:
print(expense_1 * expense_2)
exit(0)