Package for this problem was not updated by the problem writer or Codeforces administration after we’ve upgraded the judging servers. To adjust the time limit constraint, solution execution time will be multiplied by 2. For example, if your solution works for 400 ms on judging servers, then value 800 ms will be displayed and used to determine the verdict.

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Unknown Language Round #4:

- Befunge

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C. Decimal sum

time limit per test

2 secondsmemory limit per test

64 megabytesinput

standard inputoutput

standard outputYou 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

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