Compilare: main.cpp: In function 'void dijkstra(int)': main.cpp:43:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<ve[nod].size();++i) ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:62:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&n,&m,&Q); ^ main.cpp:65:39: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&x,&y,&co); ^ main.cpp:73:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&nod,&D); ^