Compilare: user.cpp: In function ‘int bfs(int, int)’: user.cpp:23:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < v[nod].size(); i++ ){ ^ user.cpp: In function ‘void dfs(int)’: user.cpp:37:37: 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:59:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < v[d].size(); i++ ){ ^ user.cpp:87:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < x.size(); i++ ) ^