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C. Array Sum

time limit per test

2 secondsmemory limit per test

64 megabytesinput

standard inputoutput

standard outputYou are given an array of integers. Calculate the sum of its elements.

Input

The *i*-th line of the input contains an integer *a*_{i} (0 ≤ *a* ≤ 1000) — the *i*-th element of the array. The size of the array is between 1 and 10, inclusive. Note that the size of the array is not given explicitly!

Output

Output a single integer — the sum of the elements of the array.

Examples

Input

2

15

110

3

Output

130

Input

90

0

21

331

45

Output

487

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