static int countPairs ( int N ) {
  int count = 0 ;
  for ( int i = 1 ;
  i <= ( int ) Math . sqrt ( N ) ;
  i ++ ) {
    int sq = i * i ;
    int diff = N - sq ;
    int sqrtDiff = ( int ) Math . sqrt ( diff ) ;
    if ( sqrtDiff * sqrtDiff == diff ) count ++ ;
  }
  return count ;
}

static int countPairs ( int N ) { int count = 0 ; for ( int i = 1 ; i <= ( int ) Math . sqrt ( N ) ; i ++ ) { int sq = i * i ; int diff = N - sq ; int sqrtDiff = ( int ) Math . sqrt ( diff ) ; if ( sqrtDiff * sqrtDiff == diff ) count ++ ; } return count ; }
(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: (cast_expression type: (integral_type) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (identifier)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (identifier)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (cast_expression type: (integral_type) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier))) consequence: (expression_statement (update_expression (identifier)))))) (return_statement (identifier))))