#1109. 位运算-取整数在二进制下的低n位
位运算-取整数在二进制下的低n位
15 & ((1<<3)-1) =({{ input(1) }})
14 & ((1<<2)-1) =({{ input(2) }})
15 & ((1<<3)-1) =({{ input(1) }})
14 & ((1<<2)-1) =({{ input(2) }})
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