分支定界法解旅行商问题的简单实现，用C++代码，效率经过优化后可以在1s内解规模为25左右的旅行商问题。附带了测试文件的自动生成工具。-Branch and bound method for solving the traveling salesman problem is simple to achieve, with the C++ code, the efficiency can be optimized through the solution 1s about the size of