Time Exceeded
/in/foo.cc: In function 'void dfs(int, int)':
/in/foo.cc:22:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<pe[x].cls.size();i++){
~^~~~~~~~~~~~~~~~~
/in/foo.cc: In function 'void dfs(int, int)':
/in/foo.cc:22:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<pe[x].cls.size();i++){
~^~~~~~~~~~~~~~~~~
