static int summingSeries ( long n ) {
  int S = 0 ;
  for ( i = 1 ;
  i <= n ;
  i ++ ) S += i * i - ( i - 1 ) * ( i - 1 ) ;
  return S ;
}

static int summingSeries ( long n ) { int S = 0 ; for ( i = 1 ; i <= n ; i ++ ) S += i * i - ( i - 1 ) * ( i - 1 ) ; return S ; }
(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: (assignment_expression left: (identifier) right: (decimal_integer_literal)) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal)))))))) (return_statement (identifier))))