import java.util.TreeSet;
public class Main {
public static void main
(String[] args
) { TreeSet<String> res = new TreeSet<>();
for(int i = 0; i < 99999; ++i) {
if (s.contains("23") && s.contains("37")) {
res.add(s);
}
}
System.
out.
println(res.
size()); }
}
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