/in/foo.cc: In function 'void mul()':
/in/foo.cc:8:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     for (int i = 0; i < n.size(); i++) {
      |                     ~~^~~~~~~~~~
/in/foo.cc:9:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |          for (int j = 0; j < result.size(); j++) {
      |                          ~~^~~~~~~~~~~~~~~
/in/foo.cc:10:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |            if (i + j < t.size()) {
      |                ~~~~~~^~~~~~~~~~
/in/foo.cc:19:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |      for (int i = 0; i < t.size(); i++) {
      |                      ~~^~~~~~~~~~
/in/foo.cc: In function 'void my_pow()':
/in/foo.cc:31:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |      for (int i = 0; i < n.size(); i++) {
      |                      ~~^~~~~~~~~~
/in/foo.cc:32:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |         for (int j = 0; j < n.size(); j++) {
      |                         ~~^~~~~~~~~~
/in/foo.cc:33:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |             if (i + j < t.size()) {
      |                 ~~~~~~^~~~~~~~~~
/in/foo.cc:42:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |      for (int i = 0; i < t.size(); i++) {
      |                      ~~^~~~~~~~~~