03. Sum Numbers

start_number = int(input())

sum_numbers = 0

# действие: взимаме число -> сумираме
# стоп: sum_numbers >= start_number
# продължава: sum_numbers < start_number

while sum_numbers < start_number:
    number = int(input())
    sum_numbers += number
#sum_numbers >= start_number
print(sum_numbers)