Compilare: user.cpp: In function ‘void bfs(pos)’: user.cpp:94:9: warning: unused variable ‘c1’ [-Wunused-variable] int c1,c2; ^ user.cpp:94:12: warning: unused variable ‘c2’ [-Wunused-variable] int c1,c2; ^ user.cpp:95:9: warning: unused variable ‘i’ [-Wunused-variable] int i,j; ^ user.cpp:95:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^ user.cpp: In function ‘void startAll()’: user.cpp:110:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<startPos.size(); i++) ^