/in/foo.cc: In function 'int main()':
/in/foo.cc:231:31: error: cannot bind non-const lvalue reference of type 'int&' to an rvalue of type 'int'
  231 |                 init_2(i, ed, -score[i]);
      |                               ^~~~~~~~~
/in/foo.cc:62:34: note:   initializing argument 3 of 'void init_2(int&, int&, int&)'
   62 | void init_2(int &x, int &y, int &z) {
      |                             ~~~~~^