Compilare: main.cpp: In function 'void Dijkstra(long int)': main.cpp:56:10: warning: unused variable 'p' [-Wunused-variable] long p=0,u=0; ^ main.cpp:56:14: warning: unused variable 'u' [-Wunused-variable] long p=0,u=0; ^ main.cpp: In function 'void Citeste()': main.cpp:34:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld%ld",&N,&M); ^ main.cpp:38:42: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld%ld%ld",&x,&y,&dist); ^