Sum of the Numbers on One Line

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Problem

You are given N numbers on a single line. Write a program that prints the sum of those N numbers.

Input

The first line contains N numbers separated by spaces. (1N1001 \le N \le 100) Every number is a natural number no greater than 10,000, and no number is written with a leading zero. N is not given separately, so read the whole first line to find out how many numbers there are.

Output

Print the sum of the N given numbers on the first line.