Accepted
/in/foo.cc: In function 'void buildTree(int)':
/in/foo.cc:26:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<conn[id].size();i++) {
~^~~~~~~~~~~~~~~~
/in/foo.cc: In function 'void buildTree(int)':
/in/foo.cc:26:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<conn[id].size();i++) {
~^~~~~~~~~~~~~~~~
