Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:39:17: error: cannot convert ‘__gnu_cxx::__normal_iterator<int*, std::vector<int> >’ to ‘int’ in assignment I[i].x1 = lower_bound(vx.begin(), vx.end(), I[i].x1); ^ user.cpp:40:17: error: cannot convert ‘__gnu_cxx::__normal_iterator<int*, std::vector<int> >’ to ‘int’ in assignment I[i].x2 = lower_bound(vx.begin(), vx.end(), I[i].x2); ^ user.cpp:41:17: error: cannot convert ‘__gnu_cxx::__normal_iterator<int*, std::vector<int> >’ to ‘int’ in assignment I[i].y1 = lower_bound(vy.begin(), vy.end(), I[i].y1); ^ user.cpp:42:17: error: cannot convert ‘__gnu_cxx::__normal_iterator<int*, std::vector<int> >’ to ‘int’ in assignment I[i].y2 = lower_bound(vy.begin(), vy.end(), I[i].y2); ^ user.cpp:44:5: error: expected primary-expression before ‘}’ token } ^ user.cpp:44:5: error: expected ‘;’ before ‘}’ token