Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:32:9: error: ‘d’ was not declared in this scope d.insert(v[i]); ^ user.cpp:34:5: error: ‘set’ was not declared in this scope set<int>::iterator it; ^~~ user.cpp:34:9: error: expected primary-expression before ‘int’ set<int>::iterator it; ^~~ user.cpp:35:9: error: ‘it’ was not declared in this scope for(it=d.begin();it!=d.end();++it) ^~ user.cpp:35:12: error: ‘d’ was not declared in this scope for(it=d.begin();it!=d.end();++it) ^ user.cpp:37:9: error: ‘x’ was not declared in this scope x=*it; ^ user.cpp:40:25: error: ‘a’ was not declared in this scope if(v[i]==x) a[i]=1; ^ user.cpp:41:18: error: ‘a’ was not declared in this scope else a[i]=-1; ^ user.cpp:27:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^