CodeForces 598A（水）

还是要注意int和long long的范围，以及double型的问题

pow函数经常会报一个double型的错，参考这篇文章

http://blog.csdn.net/lawrencesgj/article/details/7773507

double pow(double,int)

double sqrt(double)

 

#include <iostream>
#include <string>
#include <cstring>
#include <cstdlib>
#include <cstdio>
#include <cmath>
#include <algorithm>
#include <stack>
using namespace std;

#define mem(a,b) memset(a,b,sizeof(a))
#define pf printf
#define sf scanf
#define debug printf("!\n")
#define INF 10000
#define MAX(a,b) a>b?a:b
#define blank pf("\n")
#define LL long long

int main()
{
    int i,j,t,n;
    sf("%d",&t);
    while(t--)
    {
        sf("%d",&n);
        long long sum = n*(n+1)/2;
        for(i = 0;;i++)
        {
            long long k = pow(2,i);
            if(k>n)
                break;
            sum-=(2*k);
        }
        
        pf("%I64d\n",sum);
    }

    return 0;