Compilare: user.cpp: In function ‘long long int Solve(int)’: user.cpp:27:42: warning: operation on ‘poz’ may be undefined [-Wsequence-point] poz = poz=lower_bound(a+1,a+N+1,x)-a; ^ user.cpp:26:9: warning: unused variable ‘st’ [-Wunused-variable] int st,dr,m,poz,i; ^ user.cpp:26:12: warning: unused variable ‘dr’ [-Wunused-variable] int st,dr,m,poz,i; ^ user.cpp:26:15: warning: unused variable ‘m’ [-Wunused-variable] int st,dr,m,poz,i; ^ user.cpp:26:21: warning: unused variable ‘i’ [-Wunused-variable] int st,dr,m,poz,i; ^ user.cpp:31:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:37:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,x; ^