Compilare: main.cpp: In function 'void find_ctc(int)': main.cpp:16:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:53:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (elem<sl[i].size()){ ~~~~^~~~~~~~~~~~~ main.cpp:62:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<sl[csol].size()-1;i++){ ~^~~~~~~~~~~~~~~~~~ main.cpp:69:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<sl[csol].size();i++) ~^~~~~~~~~~~~~~~~ main.cpp:40:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&n); ^ main.cpp:42:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&x,&y); ^