Compilare: user.cpp: In function ‘void bfs(pos)’: user.cpp:90:9: warning: unused variable ‘c1’ [-Wunused-variable] int c1,c2; ^ user.cpp:90:12: warning: unused variable ‘c2’ [-Wunused-variable] int c1,c2; ^ user.cpp:91:9: warning: unused variable ‘i’ [-Wunused-variable] int i,j; ^ user.cpp:91:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^ user.cpp: In function ‘void startAll()’: user.cpp:106:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<startPos.size(); i++) ^