public static void main ( String [ ] args ) throws IOException {
  BufferedReader input = new BufferedReader ( new InputStreamReader ( System . in ) ) ;
  StringTokenizer tokenizer = new StringTokenizer ( input . readLine ( ) ) ;
  int x = Integer . parseInt ( tokenizer . nextToken ( ) ) ;
  int y = Integer . parseInt ( tokenizer . nextToken ( ) ) ;
  int z = Integer . parseInt ( tokenizer . nextToken ( ) ) ;
  x -= z ;
  if ( x < 1 ) {
    System . out . println ( 0 ) ;
  }
  else {
    System . out . println ( x / ( y + z ) ) ;
  }
}

public static void main ( String [ ] args ) throws IOException { BufferedReader input = new BufferedReader ( new InputStreamReader ( System . in ) ) ; StringTokenizer tokenizer = new StringTokenizer ( input . readLine ( ) ) ; int x = Integer . parseInt ( tokenizer . nextToken ( ) ) ; int y = Integer . parseInt ( tokenizer . nextToken ( ) ) ; int z = Integer . parseInt ( tokenizer . nextToken ( ) ) ; x -= z ; if ( x < 1 ) { System . out . println ( 0 ) ; } else { System . out . println ( x / ( y + z ) ) ; } }
(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 (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (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 (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 (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 (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))) (expression_statement (assignment_expression left: (identifier) right: (identifier))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (decimal_integer_literal))))) alternative: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (identifier) right: (identifier)))))))))))