598A:Tricky Sum

<Problem Link>

<Source Code>

#include<stdio.h>
int main()
{
long long n,x,i,t;
scanf("%lld",&t);
while(t--)
{x=1;

scanf("%lld",&n);
i=n*(n+1)/2;

while(x<=n)
{
x*=2;}
x--;
printf("%lld\n",i-2*x);

}

}
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About waprogramming

I am in CSE,from CUET
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