public static void main ( String [ ] args ) throws IOException {
  Scanner sc = new Scanner ( System . in ) ;
  int n = sc . nextInt ( ) ;
  long x1 = sc . nextInt ( ) , x2 = sc . nextInt ( ) ;
  pair [ ] arr = new pair [ n ] ;
  for ( int i = 0 ;
  i < arr . length ;
  i ++ ) {
    long a = sc . nextInt ( ) , b = sc . nextInt ( ) ;
    arr [ i ] = new pair ( a * x1 + b , a * x2 + b ) ;
  }
  Arrays . sort ( arr ) ;
  long x = arr [ 0 ] . x , y = arr [ 0 ] . y ;
  boolean f = false ;
  for ( int i = 1 ;
  i < arr . length ;
  i ++ ) {
    if ( arr [ i ] . x > x && arr [ i ] . y < y ) {
      f = true ;
      break ;
    }
    if ( arr [ i ] . y > y ) {
      y = arr [ i ] . y ;
      x = arr [ i ] . x ;
    }
  };
}

public static void main ( String [ ] args ) throws IOException { Scanner sc = new Scanner ( System . in ) ; int n = sc . nextInt ( ) ; long x1 = sc . nextInt ( ) , x2 = sc . nextInt ( ) ; pair [ ] arr = new pair [ n ] ; for ( int i = 0 ; i < arr . length ; i ++ ) { long a = sc . nextInt ( ) , b = sc . nextInt ( ) ; arr [ i ] = new pair ( a * x1 + b , a * x2 + b ) ; } Arrays . sort ( arr ) ; long x = arr [ 0 ] . x , y = arr [ 0 ] . y ; boolean f = false ; for ( int i = 1 ; i < arr . length ; i ++ ) { if ( arr [ i ] . x > x && arr [ i ] . y < y ) { f = true ; break ; } if ( arr [ i ] . y > y ) { y = arr [ i ] . y ; x = arr [ i ] . x ; } } ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) (throws (type_identifier)) body: (block (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)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (array_type element: (type_identifier) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (type_identifier) dimensions: (dimensions_expr (identifier))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (field_access object: (identifier) field: (identifier))) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (object_creation_expression type: (type_identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier)) (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier)))))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (field_access object: (array_access array: (identifier) index: (decimal_integer_literal)) field: (identifier))) declarator: (variable_declarator name: (identifier) value: (field_access object: (array_access array: (identifier) index: (decimal_integer_literal)) field: (identifier)))) (local_variable_declaration type: (boolean_type) declarator: (variable_declarator name: (identifier) value: (false))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (field_access object: (identifier) field: (identifier))) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (field_access object: (array_access array: (identifier) index: (identifier)) field: (identifier)) right: (identifier)) right: (binary_expression left: (field_access object: (array_access array: (identifier) index: (identifier)) field: (identifier)) right: (identifier)))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (true))) (break_statement))) (if_statement condition: (parenthesized_expression (binary_expression left: (field_access object: (array_access array: (identifier) index: (identifier)) field: (identifier)) right: (identifier))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (field_access object: (array_access array: (identifier) index: (identifier)) field: (identifier)))) (expression_statement (assignment_expression left: (identifier) right: (field_access object: (array_access array: (identifier) index: (identifier)) field: (identifier))))))))))