Compilare: user.cpp: In function ‘void bfs(int)’: user.cpp:47:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while ( p < C.size() && !gata ) ^ user.cpp:50:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < v[x].size() ; i++) ^ user.cpp:44:30: warning: unused variable ‘j’ [-Wunused-variable] int i, x, p=0, gata = 0, j ; ^ user.cpp: In function ‘void bkt(int)’: user.cpp:93:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < v[ s[k-1] ].size() ; i++) ^