public static void main ( String [ ] args ) {
  Scanner sc = new Scanner ( System . in ) ;
  String s = sc . next ( ) ;
  boolean b1 , b2 = false , b3 = true ;
  b1 = ( s . charAt ( 0 ) == 'A' ) ;
  for ( int i = 1 ;
  i < s . length ( ) ;
  i ++ ) {
    char c = s . charAt ( i ) ;
    if ( i != 1 && i != s . length ( ) - 1 && c == 'C' ) {
      if ( ! b2 ) {
        b2 = true ;
      }
      else {
        b1 = false ;
      }
    }
    else if ( Character . isUpperCase ( c ) ) {
      b3 = false ;
    }
  }
  if ( b1 && b2 && b3 ) {
    System . out . println ( "AC" ) ;
  }
  else {
    System . out . println ( "WA" ) ;
  }
}

public static void main ( String [ ] args ) { Scanner sc = new Scanner ( System . in ) ; String s = sc . next ( ) ; boolean b1 , b2 = false , b3 = true ; b1 = ( s . charAt ( 0 ) == ' A ' ) ; for ( int i = 1 ; i < s . length ( ) ; i ++ ) { char c = s . charAt ( i ) ; if ( i != 1 && i != s . length ( ) - 1 && c == ' C ' ) { if ( ! b2 ) { b2 = true ; } else { b1 = false ; } } else if ( Character . isUpperCase ( c ) ) { b3 = false ; } } if ( b1 && b2 && b3 ) { System . out . println ( " AC " ) ; } else { System . out . println ( " WA " ) ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (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: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (boolean_type) declarator: (variable_declarator name: (identifier)) declarator: (variable_declarator name: (identifier) value: (false)) declarator: (variable_declarator name: (identifier) value: (true))) (expression_statement (assignment_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal))) right: (character_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: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (binary_expression left: (identifier) right: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (decimal_integer_literal)))) right: (binary_expression left: (identifier) right: (character_literal)))) consequence: (block (if_statement condition: (parenthesized_expression (unary_expression operand: (identifier))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (true)))) alternative: (block (expression_statement (assignment_expression left: (identifier) right: (false)))))) alternative: (if_statement condition: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (false)))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))) alternative: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal))))))))