public static void main ( String [ ] args ) {
  int n , m , sum = 0 , a ;
  Scanner in = new Scanner ( System . in ) ;
  n = in . nextInt ( ) ;
  m = in . nextInt ( ) ;
  if ( m % n != 0 ) {
    System . out . println ( - 1 ) ;
  }
  else {
    a = m / n ;
    while ( a % 2 == 0 || a % 3 == 0 ) {
      if ( a % 2 == 0 ) {
        sum ++ ;
        a = a / 2 ;
      }
      if ( a % 3 == 0 ) {
        sum ++ ;
        a = a / 3 ;
      }
    }
    if ( a == 1 ) {
      System . out . println ( sum ) ;
    }
    else System . out . println ( - 1 ) ;
  }
}

public static void main ( String [ ] args ) { int n , m , sum = 0 , a ; Scanner in = new Scanner ( System . in ) ; n = in . nextInt ( ) ; m = in . nextInt ( ) ; if ( m % n != 0 ) { System . out . println ( - 1 ) ; } else { a = m / n ; while ( a % 2 == 0 || a % 3 == 0 ) { if ( a % 2 == 0 ) { sum ++ ; a = a / 2 ; } if ( a % 3 == 0 ) { sum ++ ; a = a / 3 ; } } if ( a == 1 ) { System . out . println ( sum ) ; } else System . out . println ( - 1 ) ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier)) declarator: (variable_declarator name: (identifier)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal)) declarator: (variable_declarator name: (identifier))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (unary_expression operand: (decimal_integer_literal)))))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (identifier)))) (while_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal)) right: (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal)))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) consequence: (block (expression_statement (update_expression (identifier))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) consequence: (block (expression_statement (update_expression (identifier))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))) alternative: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (unary_expression operand: (decimal_integer_literal))))))))))