P9005 [AtCoder] AtCoder Beginner Contest 147 - Xor Sum 4
普及+
题目描述

We have N integers. The i-th integer is A_i.

Find $\sum_{i=1}^{N-1}\sum_{j=i+1}^{N} (A_i \mbox{ XOR } A_j), modulo (10^9+7)$.

What is $\mbox{ XOR }$?

The XOR of integers A and $B, A \mbox{ XOR } B$, is defined as follows:

  • When $A \mbox{ XOR } B$ is written in base two, the digit in the 2^k'$s place (k \geq 0)$ is 1 if either A or B, but not both, has 1 in the 2^k's place, and 0 otherwise.

For example$, 3 \mbox{ XOR } 5 = 6.$ (In base two: $011 \mbox{ XOR } 101 = 110.)$

Constraints

  • $2 \leq N \leq 3 \times 10^5$
  • $0 \leq A_i < 2^{60}$
  • All values in input are integers.

Input

Input is given from Standard Input in the following format:

N
A_1 A_2 ... A_N

Output

Print the value $\sum_{i=1}^{N-1}\sum_{j=i+1}^{N} (A_i \mbox{ XOR } A_j), modulo (10^9+7)$.

Examples

Input

3
1 2 3

Output

6

Input

10
3 1 4 1 5 9 2 6 5 3

Output

237

Input

10
3 14 159 2653 58979 323846 2643383 27950288 419716939 9375105820

Output

103715602

输入格式

见题面

输出格式

见题面

样例输入
3 1 2 3
样例输出
6