static int countPaths ( int m , int n ) {
  int [ ] [ ] dp = new int [ m + 1 ] [ n + 1 ] ;
  for ( int i = 1 ;
  i <= m ;
  i ++ ) {
    for ( int j = 1 ;
    j <= n ;
    j ++ ) {
      if ( i == 1 || j == 1 ) dp [ i ] [ j ] = 1 ;
      else dp [ i ] [ j ] = dp [ i - 1 ] [ j ] + dp [ i ] [ j - 1 ] ;
    }
  }
  return dp [ m ] [ n ] ;
}

static int countPaths ( int m , int n ) { int [ ] [ ] dp = new int [ m + 1 ] [ n + 1 ] ; for ( int i = 1 ; i <= m ; i ++ ) { for ( int j = 1 ; j <= n ; j ++ ) { if ( i == 1 || j == 1 ) dp [ i ] [ j ] = 1 ; else dp [ i ] [ j ] = dp [ i - 1 ] [ j ] + dp [ i ] [ j - 1 ] ; } } return dp [ m ] [ n ] ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (binary_expression left: (identifier) right: (decimal_integer_literal))) dimensions: (dimensions_expr (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) consequence: (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (decimal_integer_literal))) alternative: (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (binary_expression left: (array_access array: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) index: (identifier)) right: (array_access array: (array_access array: (identifier) index: (identifier)) index: (binary_expression left: (identifier) right: (decimal_integer_literal))))))))))) (return_statement (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)))))