Compilare: user.cpp: In function ‘int main()’: user.cpp:60:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < G[i].size(); j ++) ^ user.cpp: In function ‘int solve(int, int)’: user.cpp:34:36: warning: ‘sol’ may be used uninitialized in this function [-Wmaybe-uninitialized] int ret = Sum[father][sol] - (sol + 1) * (x[nod] - times + 1) + ord[nod]; ^