Compilare: main.cpp: In function 'int main()': main.cpp:14:15: warning: unused variable 'a' [-Wunused-variable] int n,x,l,a,b; ^ main.cpp:14:17: warning: unused variable 'b' [-Wunused-variable] int n,x,l,a,b; ^ main.cpp:42:26: warning: 'sum' may be used uninitialized in this function [-Wmaybe-uninitialized] if(myset.empty()==0) {sum=sum+myset.top(); ~~~^~~~~~~~~~~~~~~~ main.cpp:49:19: warning: 'poz' may be used uninitialized in this function [-Wmaybe-uninitialized] for(int i=poz+1;i<=n;i++) ^