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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. using namespace std;
  5.  
  6. class matrix_t
  7. {
  8.   size_t col_count, row_count;
  9.   vector< bool > data;
  10.  
  11.   size_t as_index( const size_t col, const size_t row ) const
  12.   {
  13.     return row * col_count + col;
  14.   }
  15.  
  16. public:
  17.  
  18.   matrix_t( const size_t col_count, const size_t row_count )
  19.     : col_count( col_count )
  20.     , row_count( row_count )
  21.     , data( row_count*col_count )
  22.   {
  23.     // nop
  24.   }
  25.  
  26.   auto at( const size_t col, const size_t row ) const
  27.   {
  28.     return data[ as_index( col, row ) ];
  29.   }
  30.  
  31.   auto at( const size_t col, const size_t row )
  32.   {
  33.     return data[ as_index( col, row ) ];
  34.   }
  35.  
  36.   istream& read( istream& is )
  37.   {
  38.     for( size_t r = 0; r < row_count; ++r )
  39.     {
  40.       for( size_t c = 0; c < col_count; ++c )
  41.       {
  42.         char t;
  43.         is >> t;
  44.         at( c, r ) = t == '0' ? false : true;
  45.       }
  46.     }
  47.     return is;
  48.   }
  49.  
  50.   ostream& write( ostream& os )
  51.   {
  52.     for( size_t r = 0; r < row_count; ++r )
  53.     {
  54.       for( size_t c = 0; c < col_count; ++c )
  55.       {
  56.         os << at( c, r ) ? '1' : '0';
  57.       }
  58.       os << endl;
  59.     }
  60.     return os;
  61.   }
  62.  
  63. };
  64.  
  65. int main()
  66. {
  67.   size_t col, row;
  68.   cin >> col >> row;
  69.  
  70.   matrix_t m( col, row );
  71.   m.read( cin );
  72.  
  73.   cout << endl;
  74.   m.write( cout );
  75.  
  76.   return 0;
  77. }
  78.  
  79.  
Success #stdin #stdout 0s 15240KB
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https://ideone.com/q6j9tJ
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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