public static void solve ( long n ) {
  long i = 1 ;
  n -- ;
  long pos = 0 ;
  while ( n >= 0 ) {
    pos = n ;
    n -= i ;
    i ++ ;
  }
  System . out . println ( pos + 1 ) ;
}

public static void solve ( long n ) { long i = 1 ; n -- ; long pos = 0 ; while ( n >= 0 ) { pos = n ; n -= i ; i ++ ; } System . out . println ( pos + 1 ) ; }
(method_declaration (modifiers) type: (void_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))) (expression_statement (update_expression (identifier))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) body: (block (expression_statement (assignment_expression left: (identifier) right: (identifier))) (expression_statement (assignment_expression left: (identifier) right: (identifier))) (expression_statement (update_expression (identifier))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal)))))))