Compilare: user.cpp: In function ‘int dijkstra(int)’: user.cpp:72:13: warning: unused variable ‘distance’ [-Wunused-variable] int distance = Set.begin()->first; ^ user.cpp:63:9: warning: unused variable ‘cont’ [-Wunused-variable] int cont = 1; ^ user.cpp:88:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^