Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:27:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[x].size(); i++) ^ user.cpp: In function ‘void RMQ()’: user.cpp:71:43: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] rmq[i][j] = rmq[i-1][j + (1<<i-1)]; ^ user.cpp:72:43: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] nod[i][j] = nod[i-1][j + (1<<i-1)]; ^