They pinpoint the source of the approval to one call sign: Peter 1.
int mid = left + (right - left) / 2; // 防止溢出的中点计算
，更多细节参见Line官方版本下载
UPDATE: Read the solution here，更多细节参见快连下载-Letsvpn下载
Confidential tip?Send a tip to our reporters，这一点在快连下载安装中也有详细论述