Compilare: user.cpp: In function ‘void DFS(int, int)’: user.cpp:27:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < A[nod].size (); ++i) ^ user.cpp: In function ‘void RMQ_create()’: user.cpp:46:47: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] for (n = s - (1 << i) + 1, l = 1 << i - 1, j = 1; j <= n; ++j) ^