Compilare: main.cpp: In function 'void dijkstra(int, std::vector<int>&)': main.cpp:33:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<graf[nod].size(); ++i) ~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:46:36: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &n,&m,&k); ^ main.cpp:50:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &trb[i]); ^ main.cpp:53:40: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &x,&y,&c); ^