#1112. 位运算-把整数在二进制下的第n位设为0
位运算-把整数在二进制下的第n位设为0
15 & (~ (1<<2)) = ({{ input(1) }})
16 & (~ (1<<4)) = ({{ input(2) }})
15 & (~ (1<<2)) = ({{ input(1) }})
16 & (~ (1<<4)) = ({{ input(2) }})
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