Compilare: user.cpp: In function ‘void rmqa()’: user.cpp:37:39: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] rmq[i][j]=rmq[i-1][j+(1<<i-1)]; ^ user.cpp: In function ‘int lca(int, int)’: user.cpp:47:21: warning: unused variable ‘a’ [-Wunused-variable] if(a>b)int au=a,a=b,b=au; ^ user.cpp:47:25: warning: unused variable ‘b’ [-Wunused-variable] if(a>b)int au=a,a=b,b=au; ^ user.cpp: In function ‘int main()’: user.cpp:82:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(v[k]==maxim) ^ user.cpp:72:21: warning: ‘nod_start’ may be used uninitialized in this function [-Wmaybe-uninitialized] dfs(nod_start,0); ^