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解析： 这是一个特判哦！ 代码： 阅读全文
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分析： REF:https://blog.csdn.net/idrey/article/details/53869954 阅读全文
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Given you n sets.All positive integers in sets are not less than 1 and not greater than m.If use these sets to combinate the new set,how many differen 阅读全文
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As we known, data stored in the computers is in binary form.（数据以二进制形式存储于电脑之中。）The problem we discuss now is about the positive integers and its binary 阅读全文
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#include using namespace std; int getbits(int n)//统计(n)bin中的1的个数 { int res=0; while(n) { res++; n=n&(n-1); } return res; } int cmp(int a,int b)//统计a,b中the number of... 阅读全文
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题目： For 2 non-negative integers x and y, f(x, y) is defined as the number of different bits in the binary format of x and y. For example, f(2, 3)=1,f( 阅读全文