You are given an array of integer numbers. Calculate the sum of its elements.

Input

The first line of the input contains an integer n (1 ≤ n ≤ 100) — the size of the array. Next n lines contain the elements of the array, one per line. Each element is an integer between 1 and 100, inclusive.

Output

Output the sum of the elements of the array.

Examples

Input

5
1
2
3
4
5


Output

15


Input

7
100
5
45
86
14
20
30


Output

300

Source: codeforces | Difficulty: MEDIUM


Solutions: