The Number of Participants

Welcome to PC Koshien, players. At PC Koshien, competitions are currently being held in a total of three categories: programming category, mobile category, and Ichimai's picture CG category.

Given the number of participants in each department, create a program that calculates the total number of participants.

Input

The input is given in the following format.

p m c

The input is one line, the number of participants in the programming department p (0 ≤ p ≤ 10000), the number of participants in the mobile department m (0 ≤ m ≤ 10000), the number of participants in the Ichimai picture CG department c (0) ≤ c ≤ 10000) is given.

Output

Output the total number of participants on one line.

Examples

Input

10 10 20

Output

40

Input

100 0 0

Output

100

Input

1000 1000 1000

Output

3000

inputFormat

Input

The input is given in the following format.

p m c

The input is one line, the number of participants in the programming department p (0 ≤ p ≤ 10000), the number of participants in the mobile department m (0 ≤ m ≤ 10000), the number of participants in the Ichimai picture CG department c (0) ≤ c ≤ 10000) is given.

outputFormat

Output

Output the total number of participants on one line.

Examples

Input

10 10 20

Output

40

Input

100 0 0

Output

100

Input

1000 1000 1000

Output

3000

样例

10 10 20

40