Compilare: user.cpp: In function ‘void Read()’: user.cpp:45:13: warning: unused variable ‘x’ [-Wunused-variable] int x,y; ^ user.cpp:45:15: warning: unused variable ‘y’ [-Wunused-variable] int x,y; ^ user.cpp: In function ‘void BFS()’: user.cpp:58:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[x].size();i++) ^ user.cpp: In function ‘int solveTask2(int)’: user.cpp:76:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[node].size();i++) ^