foo.cc: In function 'void Output(std::vector<Int>&)':
foo.cc:15:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |         for(int i=0; i<a.size(); i++)
      |                      ~^~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:24:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |         for(int i=0; i<v.size(); i++)
      |                      ~^~~~~~~~~

正在同步测试数据，请稍后
[Hydro](https://hydro.ac)提供评测服务