Compilare: user.cpp: In function ‘void lca(int)’: user.cpp:17:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<a[j].size(); i++) ^ user.cpp:21:12: warning: array subscript is above array bounds [-Warray-bounds] b[2][p]=nr; ^ user.cpp:27:12: warning: array subscript is above array bounds [-Warray-bounds] b[2][p]=nr; ^ user.cpp: In function ‘int main()’: user.cpp:41:8: warning: array subscript is above array bounds [-Warray-bounds] b[2][p]=nr; ^ user.cpp:52:23: warning: array subscript is above array bounds [-Warray-bounds] if(b[2][i]<cmin) ^