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import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
public class Main {
public static void main( final String[] args ) throws Exception {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
String str = br.readLine();
int length = str.length();
for ( int i = 0; i < length; i++ ) {
char ch = str.charAt(i);
if ( (ch - '0') < ('D' - '0') ) {
ch = (char) (ch + 26);
}
bw.append((char) (ch - 3));
bw.flush();
}
}
}
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