/in/foo.cc: In function 'std::vector<int> SetInter(int*, int, int*, int)':
/in/foo.cc:15:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |                 while (k < intersection.size()) {
      |                        ~~^~~~~~~~~~~~~~~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:60:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |     while (j < inter1.size()) {
      |            ~~^~~~~~~~~~~~~~~
/in/foo.cc:67:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |     while (j < inter2.size()) {
      |            ~~^~~~~~~~~~~~~~~