Compilare: user.cpp: In function ‘int search(int, int)’: user.cpp:15:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < v[nod].size(); i++ ){ ^ user.cpp: In function ‘int main()’: user.cpp:35:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < v[nod].size(); i++ ){ ^ user.cpp: In function ‘int search(int, int)’: user.cpp:20:1: warning: control reaches end of non-void function [-Wreturn-type] } ^