Compilare: main.cpp: In function 'void dijktra()': main.cpp:66:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<ad[node].size();i++) { ~^~~~~~~~~~~~~~~~ main.cpp: In function 'void citire()': main.cpp:45:31: 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:47:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] {fscanf(fin,"%d",&val); ^ main.cpp:55:38: 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,&val); ^