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easiest.java
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/
easiest.java
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package easiest;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
class easiest {
private void run() throws IOException {
BufferedReader r = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter w = new BufferedWriter(new OutputStreamWriter(System.out));
while (true) {
int n = Integer.parseInt(r.readLine());
if (n == 0)
break;
int p = 11;
while (sumDigits(n) != sumDigits(n * p))
p++;
w.write(p + "\n");
}
w.flush();
}
private int sumDigits(int x) {
int s = 0;
while (x > 0) {
s += x % 10;
x = x / 10;
}
return s;
}
public static void main(String[] a) throws IOException {
(new easiest()).run();
}
}