Today is Friday. Anton is finally free from school for two days! Anton can go home in two ways:
Anton also knows that there are $$$c$$$ shops that are encountered on both paths (in both places). Anton is curious about how many shops are there in his city in total? Let's assume that there are no more shops in the city except for these shops.
Help him answer this question.
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The first line contains three integers $$$a$$$, $$$b$$$, $$$c$$$ ($$$0 \le c \le a, b \le 100$$$) — the number of shops on the first path, the second path, and on both.
Print a single integer — the total number of shops in the city.
1 2 0
3
9 6 3
12