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  1. #ifndef STRUCT07_H_
  2. #define STRUCT07_H_
  3.  
  4. #include <iostream>
  5. using namespace std;
  6.  
  7. struct complex_number {
  8.     double real;
  9.     double imaginary;
  10. };
  11.  
  12. istream& operator>>(istream& is, complex_number& cpx);
  13.  
  14. enum complex_type{
  15.     real,
  16.     imaginary
  17. };
  18.  
  19. struct Query{
  20.     complex_type type;
  21.     int index;
  22. };
  23.  
  24. class Judge{
  25.     public:
  26.         void check_init(){
  27.             if(init == 0){
  28.                 cout << "Please call the init function first!" << endl;
  29.                 exit(0);
  30.             }
  31.         }
  32.         void init_f(int &N, int &Q, complex_number*& cpx, Query*& queries){
  33.             cin >> N >> Q;
  34.             cpx = new complex_number[N];
  35.             queries = new Query[Q];
  36.             for(int i = 0; i < N; i++){
  37.                 cin >> cpx[i];
  38.             }
  39.             for(int i = 0; i < Q; i++){
  40.                 int tp;
  41.                 cin >> queries[i].index >> tp;
  42.                 if(tp) queries[i].type = imaginary;
  43.                 else queries[i].type = real;
  44.             }
  45.             init = 1;
  46.         }
  47.     private:
  48.         int init = 0;
  49. };
  50.  
  51. Judge j;
  52.  
  53. void Init(int &N, int &Q, complex_number*& cpx, Query*& queries){
  54.     j.init_f(N, Q, cpx, queries);
  55. }
  56.  
  57. void Answer(double ans){
  58.     j.check_init();
  59.     cout << ans << endl;
  60. }
  61. #endif // STRUCT07_H_
  62.  
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https://ideone.com/tJx9Qn
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