static int ncr ( int n , int r , int mod ) {
  long res = 1 ;
  for ( int i = 1 ;
  i <= r ;
  i += 1 ) {
    res = ( res * ( n - i + 1 ) ) % mod ;
    int inv = power ( i , mod - 2 , mod ) ;
    res = ( res * inv ) % mod ;
  }
  return ( int ) ( res % mod ) ;
}

static int ncr ( int n , int r , int mod ) { long res = 1 ; for ( int i = 1 ; i <= r ; i += 1 ) { res = ( res * ( n - i + 1 ) ) % mod ; int inv = power ( i , mod - 2 , mod ) ; res = ( res * inv ) % mod ; } return ( int ) ( res % mod ) ; }
(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)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (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: (assignment_expression left: (identifier) right: (decimal_integer_literal)) body: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal))))) right: (identifier)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (identifier) right: (decimal_integer_literal)) (identifier))))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) right: (identifier)))))) (return_statement (cast_expression type: (integral_type) value: (parenthesized_expression (binary_expression left: (identifier) right: (identifier)))))))