/in/foo.cc: In function 'void oprI(VEC)':
/in/foo.cc:26:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < p.size(); i++)
                     ~~^~~~~~~~~~
/in/foo.cc:27:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int j = i + 1; j < p.size(); j++) {
                             ~~^~~~~~~~~~
/in/foo.cc: In function 'void oprII(VEC)':
/in/foo.cc:48:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < p.size(); i++) {
                     ~~^~~~~~~~~~
/in/foo.cc:58:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         else if (i == p.size() - 1) {
                  ~~^~~~~~~~~~~~~~~
/in/foo.cc: In function 'void oprIII(VEC)':
/in/foo.cc:78:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (p.size() >= globalLimit)
         ~~~~~~~~~^~~~~~~~~~~~~~
/in/foo.cc:80:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < p.size(); i++) {
                     ~~^~~~~~~~~~
/in/foo.cc: In function 'void breadthFirstSearch()':
/in/foo.cc:116:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if (headNode.k.size() > globalLimit)
             ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~