Compilare: main.cpp: In function 'int main()': main.cpp:55:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<L[X].size();i++){ ~^~~~~~~~~~~~ main.cpp:63:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<L[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp:72:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<L[vecin].size();j++){ ~^~~~~~~~~~~~~~~~ main.cpp:32:31: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread (buff,1,DIMBUFF,fin); ^