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drmmessages.java
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drmmessages.java
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import java.io.*;
import java.util.*;
public class drmmessages {
public static void main(String[] args) throws Exception {
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
String letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
String s = in.readLine();
String a = s.substring(0, s.length() / 2);
String b = s.substring(s.length() / 2);
int aRotation = 0;
for(int i = 0; i < a.length(); i++) {
aRotation += letters.indexOf(a.substring(i, i + 1));
}
int bRotation = 0;
for(int i = 0; i < b.length(); i++) {
bRotation += letters.indexOf(b.substring(i, i + 1));
}
// out.println(aRotation);
// out.println(bRotation);
String newA = "";
String newB = "";
for(int i = 0; i < a.length(); i++) {
int index = (letters.indexOf(a.substring(i, i + 1)) + aRotation) % 26;
newA += letters.substring(index, index + 1);
}
for(int i = 0; i < b.length(); i++) {
int index = (letters.indexOf(b.substring(i, i + 1)) + bRotation) % 26;
newB += letters.substring(index, index + 1);
}
// out.println(newA);
// out.println(newB);
String res = "";
for(int i = 0; i < newA.length(); i++) {
int index = (letters.indexOf(newA.substring(i, i + 1)) + letters.indexOf(newB.substring(i, i + 1))) % 26;
res += letters.substring(index, index + 1);
// out.println(index);
}
out.println(res);
out.close();
}
}