Compilare: user.cpp: In function ‘void ins(Trie*, int, int)’: user.cpp:52:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p == aux.size()) ^ user.cpp: In function ‘int query(Trie*, int, int)’: user.cpp:68:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p == aux.size()) ^ user.cpp: In function ‘void precalc()’: user.cpp:79:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < v.size() ; ++i){ ^ user.cpp: In function ‘int main()’: user.cpp:104:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(lg_min > v[poz[g]-1].first.size()){ ^