static long count ( long v ) {
  long res = 0 ;
  for ( int i = 0 ;
  i < n ;
  ++ i ) {
    int l = - 1 , r = n ;
    while ( r - l > 1 ) {
      int c = ( l + r ) / 2 ;
      if ( a [ i ] * b [ c ] <= v ) l = c ;
      else r = c ;
    }
    res += r ;
  }
  return res ;
}

static long count ( long v ) { long res = 0 ; for ( int i = 0 ; i < n ; ++ i ) { int l = - 1 , r = n ; while ( r - l > 1 ) { int c = ( l + r ) / 2 ; if ( a [ i ] * b [ c ] <= v ) l = c ; else r = c ; } res += r ; } return res ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (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: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (unary_expression operand: (decimal_integer_literal))) declarator: (variable_declarator name: (identifier) value: (identifier))) (while_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) right: (decimal_integer_literal)))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (identifier))) right: (identifier))) consequence: (expression_statement (assignment_expression left: (identifier) right: (identifier))) alternative: (expression_statement (assignment_expression left: (identifier) right: (identifier)))))) (expression_statement (assignment_expression left: (identifier) right: (identifier))))) (return_statement (identifier))))