# Completed  2017-08-20

input_numbers = raw_input()
print(sum( [int(item) for item in input_numbers.split()] ))


# print sum(int_nums)
# print input_numbers
# print int_nums
# print sum(input_numbers[0].int,input_numbers[1].int)
# a, b = map(int, raw_input().split())
# print a+b