#include <iostream>
#include <fstream>
#include <cassert>

using namespace std;

template <typename T> class matrix
{ protected:
    int rows, cols;
    T * data;
  
  public:
    matrix(int r, int c)
    { rows = r;
      cols = c;
      data = new T[r * c]; }

    ~matrix()
    { delete [] data; }

    int numrows()
    { return rows; }

    int numcols()
    { return cols; }

    T & at(int r, int c)
    { assert(r >= 0 && r < rows);
      assert(c >= 0 && c < cols);
      return data[r * cols + c]; } };    

bool explore(matrix<int> & map, int here, int dest)
{ if (here == dest)
    return true;
  int N = map.numrows();
  for (int via = 0; via < N; via += 1)

int main(int argc, char * argv[])
{ assert(argc == 2);
  ifstream fin(argv[1]);
  if (fin.fail())
  { cerr << "Can't read " << argv[1] << "\n";
    exit(1); }
  int N;
  fin >> N;

  matrix<int> map(N, N);

  for (int r = 0; r < N; r += 1)
    for (int c = 0; c < N; c += 1)
      fin >> map.at(r, c);
  fin.close();

  for (int r = 0; r < N; r += 1)
  { for (int c = 0; c < N; c += 1)
      cout << map.at(r, c) << " ";
    cout << "\n"; }

  int from, to;
  cout << "start point and destination? ";
  cin >> from >> to;

  bool success = explore(map, from, to);
  cout << (success ? "Found it\n" : "Failed\n"); }