Muhammed is a teacher, but being a teacher isn't that easy, especially when teaching more than one subject. Muhammed is teaching Physics and Chemistry in some schools and the most difficult part of his work is calculating the total mark of a student in both subjects, That's why he is asking you to help him with such a near-impossible task. Muhammed will give you the Physics mark and the Chemistry mark of some student and you have to calculate the total mark of that student, that is, the sum of both marks, how hard!!
The input contains two integer value $$$a, b$$$, $$$(1 \le a, b \le 10^{18})$$$.
Must be one integer, the answer of the problem.
70 80
150
4 5
9
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