static int minOperations ( int n , int m ) {
  if ( m % n != 0 ) return - 1 ;
  int minOperations = 0 ;
  int q = m / n ;
  while ( q % 2 == 0 ) {
    q = q / 2 ;
    minOperations ++ ;
  }
  while ( q % 3 == 0 ) {
    q = q / 3 ;
    minOperations ++ ;
  }
  if ( q == 1 ) return minOperations ;
  return - 1 ;
}

static int minOperations ( int n , int m ) { if ( m % n != 0 ) return - 1 ; int minOperations = 0 ; int q = m / n ; while ( q % 2 == 0 ) { q = q / 2 ; minOperations ++ ; } while ( q % 3 == 0 ) { q = q / 3 ; minOperations ++ ; } if ( q == 1 ) return minOperations ; return - 1 ; }
(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 (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal))) consequence: (return_statement (unary_expression operand: (decimal_integer_literal)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (identifier)))) (while_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) body: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) (expression_statement (update_expression (identifier))))) (while_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) body: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) (expression_statement (update_expression (identifier))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (return_statement (identifier))) (return_statement (unary_expression operand: (decimal_integer_literal)))))