A theater has 150 seats arranged in 10 rows of 15 seats each. Initially, 45 people are seated in the theater. During the first break, 30 more people enter the theater and 5 leave. After the second break, 50 people enter and 20 leave. How many empty seats are there in the theater after the second break? Let's think step by step and output the final answer within \boxed{}.
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