class If0 {
public static void main(String[] args) {
int x = 0;
if (x == 0) {
System.out.println(0);
}
if (x == 0) {
System.out.println(1);
} else {
System.out.println("fail");
}
if (x == 0) {
System.out.println(2);
} else if (x == 1) {
System.out.println("catastrophe");
} else if (x == 2) {
System.out.println("error");
} else {
System.out.println("disaster");
}
}
}