public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
while (scanner.hasNextLine()) {
String input = scanner.nextLine();
if (input == null || input.length() == 0) {
System.out.println(0);
continue;
}
boolean nextIsChar = true;
boolean nextIsCommand = false;
boolean onlyNOTCommand = false;
boolean flag = true;
String[] element = input.split(" ");
for (String temp : element) {
if (temp.length() == 1 && (Character.isLowerCase(temp.charAt(0)))) {
if (nextIsChar) {
nextIsChar = false;
nextIsCommand = true;
onlyNOTCommand = false;
continue;
} else {
System.out.println(0);
flag = false;
break;
}
} else if (temp.length() > 1) {
if (nextIsCommand) {
if (!onlyNOTCommand && temp.equals("AND")) {
nextIsChar = true;
nextIsCommand = false;
continue;
} else if (!onlyNOTCommand && temp.equals("OR")) {
nextIsChar = true;
onlyNOTCommand = true;
continue;
} else if (temp.equals("NOT")) {
nextIsChar = true;
nextIsCommand = false;
onlyNOTCommand = false;
continue;
} else {
System.out.println(0);
flag = false;
break;
}
} else {
System.out.println(0);
flag = false;
break;
}
}
flag = false;
System.out.println(0);
break;
}
if (flag) {
System.out.println(1);
}
}
}