GenerateCVRP2

//~~~START:Sat, 23-Jul-2022, 09:15:54 IST
//~~~Author:Rajesh Pandian M | mrprajesh.co.in
#include <bits/stdc++.h>
using namespace std;
int main(int argc, char* argv[]){
    //~ std::random_device rd{};
    //~ std::mt19937 gen{rd()};.
    srand(time(0));

  //~ int n = 10;

  int n = 100000;
  //~ int LimitLeft   = -30000;
  cerr << "n? ";
  cin >> n;
  int LimitRight  =  30000;

  cout<< "NAME : GenN"<< n/1000 << " KC200.vrp" << '\n';

  cout<< "COMMENT : Generated       " << '\n';
  cout<< "TYPE : CVRP               " << '\n';
  cout<< "DIMENSION : " << n          << '\n';
  cout<< "EDGE_WEIGHT_TYPE : EUC_2D " << '\n';
  cout<< "CAPACITY : 200            " << '\n';
  cout<< "NODE_COORD_SECTION        " << '\n';


  //~ std::cout<< "COORD" << '\n';
  for (int i=0; i < n; ++i){
    bool isPosLeft = rand()%2;
    bool isPosRight = rand()%2;
    std::cout<< i+1 << " " << (isPosLeft? 1 : -1)*(rand()%LimitRight) << " " << (isPosRight? 1 : -1)*(rand()%LimitRight) << '\n';
  }
  std::cout<< "DEMAND_SECTION" << '\n';
  std::cout<< "1 0" << '\n';
  for (int i=2; i <= n; ++i){
    std::cout<< i << " " << 1+(rand()%10) << '\n';
  }

  cout << "DEPOT_SECTION" << '\n';
  cout << "1" << '\n';
  cout << "-1" << '\n';
  cout << "EOF" << '\n';


  return 0;
}