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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. int main(){
  4. int t;
  5. cin>>t;
  6. while(t--){
  7.     int n;
  8.     cin>>n;
  9.     long long sum=0;
  10.     sum+=(n*(n+1))/2;
  11.     for(int i=1;i<=n;i*=2){
  12.         sum-=2*(i);
  13.     }
  14.     cout<<sum;
  15. }
  16. return 0;
  17. }
Success #stdin #stdout 0s 15240KB
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stdin
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2
4
1000000000
stdout
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-4-2390792958
https://ideone.com/HvwDa6
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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