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  1. #include<iostream>
  2. #include <vector>
  3. #include <set>
  4. #include <map>
  5.  
  6. using namespace std;
  7.  
  8. /* -------------------This is the part you need to copy ----------------------*/
  9.  
  10. #if DEBUG && !ONLINE_JUDGE
  11.  
  12.     // Author :  Nikhil Garg
  13.  
  14.     #define debug(args...)     (Debugger()) , args
  15.  
  16.     class Debugger
  17.     {
  18.         public:
  19.         Debugger(const std::string& _separator = ", ") :
  20.         first(true), separator(_separator){}
  21.  
  22.         template<typename ObjectType>
  23.         Debugger& operator , (const ObjectType& v)
  24.         {
  25.             if(!first)
  26.                 std::cerr << separator;
  27.             std::cerr << v;
  28.             first = false;
  29.             return *this;
  30.         }
  31.         ~Debugger() {  std::cerr << endl;}
  32.  
  33.         private:
  34.         bool first;
  35.         std::string separator;
  36.     };
  37.  
  38.     template <typename T1, typename T2>
  39.     inline std::ostream& operator << (std::ostream& os, const std::pair<T1, T2>& p)
  40.     {
  41.         return os << "(" << p.first << ", " << p.second << ")";
  42.     }
  43.  
  44.     template<typename T>
  45.     inline std::ostream &operator << (std::ostream & os,const std::vector<T>& v)
  46.     {
  47.         bool first = true;
  48.         os << "[";
  49.         for(unsigned int i = 0; i < v.size(); i++)
  50.         {
  51.             if(!first)
  52.                 os << ", ";
  53.             os << v[i];
  54.             first = false;
  55.         }
  56.         return os << "]";
  57.     }
  58.  
  59.     template<typename T>
  60.     inline std::ostream &operator << (std::ostream & os,const std::set<T>& v)
  61.     {
  62.         bool first = true;
  63.         os << "[";
  64.         for (typename std::set<T>::const_iterator ii = v.begin(); ii != v.end(); ++ii)
  65.         {
  66.             if(!first)
  67.                 os << ", ";
  68.             os << *ii;
  69.             first = false;
  70.         }
  71.         return os << "]";
  72.     }
  73.  
  74.     template<typename T1, typename T2>
  75.     inline std::ostream &operator << (std::ostream & os,const std::map<T1, T2>& v)
  76.     {
  77.         bool first = true;
  78.         os << "[";
  79.         for (typename std::map<T1, T2>::const_iterator ii = v.begin(); ii != v.end(); ++ii)
  80.         {
  81.             if(!first)
  82.                 os << ", ";
  83.             os << *ii ;
  84.             first = false;
  85.         }
  86.         return os << "]";
  87.     }
  88.  
  89. #else
  90.     #define debug(args...)                  // Just strip off all debug tokens
  91. #endif
  92.  
  93. /*-------------------------------Stop here---------------------------------*/
  94.  
  95. int main()          
  96. {
  97.  
  98.     // Usage howto and testing debug macro
  99.  
  100.     int T= 1;
  101.     debug(T, 2, 10, "String");
  102.     vector<int> A;
  103.     set<double> s;
  104.     s.insert(12.3); s.insert(20.98);
  105.     debug("Vector A", A, "Set S", s);
  106.     pair<int, string> P(41, "Nikhil");
  107.     pair<double, pair<int, string> > PP(12.2, P);
  108.     debug(PP);
  109.     map<int, int> freq;
  110.     freq[21] = 3;
  111.     freq[89] = 5;
  112.     debug(freq);
  113.  
  114.     int B[20];
  115.     B[0] = 123; B[1] = 232; B[2] = 92;
  116.     typedef vector<int> VI;
  117.     debug(VI(B, B+3));
  118.  
  119.     return 0;
  120. }
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https://ideone.com/3X0NPy
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
secret

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