Compilare: user.cpp: In function ‘void euler(int)’: user.cpp:43:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i< t[nod].size();i++) ^ user.cpp: In function ‘void rmq()’: user.cpp:61:13: warning: unused variable ‘val’ [-Wunused-variable] int i,j,val; ^ user.cpp: In function ‘int main()’: user.cpp:73:17: warning: unused variable ‘j’ [-Wunused-variable] int i,x,y,p,j; ^