foo.cc: In function 'double find(std::vector<Point>&, int, int)':
foo.cc:51:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |     for (int i = 0; i < strip.size(); i++) {
      |                     ~~^~~~~~~~~~~~~~
foo.cc:52:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |         for (int j = i + 1; j < strip.size() && (strip[j].y - strip[i].y) < min_d; j++) {
      |                             ~~^~~~~~~~~~~~~~

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