(3)n 是 2 的幂可以二进制表示为 n & (n - 1)= 0; 链接:https://codeforces.com/blog/entry/87188 【正确代码】 1#include <iostream>23usingnamespacestd;45typedeflonglongll;67intmain()8{9intt;10scanf("%d", &t);11while(t --)12{13ll n;14scanf("%lld", &n);15if(n & (n -1)) puts("YES");16elseputs("NO");17}...
Odd Divisor http://codeforces.com/problemset/problem/1475/A (n&(n-1))==1说明这个数有因子为奇数 // // Created by w on 2021-01-28. // #include <iostream> #include <cstring> using namespace std; typedef long long ll ; int main() { int t; cin>>t; while (t--) { ll n; ...
I found solution here :https://www.geeksforgeeks.org/sum-of-greatest-odd-divisor-of-numbers-in-given-range/ But I think the solution is not clear for the even number case. Can find a better solution or more detailed explanation ?
Today, I get a problem. Sum ofgreatest odd divisorof numbers in range[a,b][a,b]witha,b<=109a,b<=109 I found solution here :https://www.geeksforgeeks.org/sum-of-greatest-odd-divisor-of-numbers-in-given-range/ But I think the solution is not clear for the even number case. ...