diff --git a/src/crypto/Crypto.java b/src/crypto/Crypto.java
index 51d57b7..e9cd156 100644
--- a/src/crypto/Crypto.java
+++ b/src/crypto/Crypto.java
@@ -1,10 +1,25 @@
-package crypto;
-
 import java.util.Scanner;
 
-public class Crypto {
+public class Main {
     public static void main(String[] args) {
-        Scanner scanner = new Scanner(System.in);
-	// write your code here
+    Scanner scanner = new Scanner(System.in);
+    String str5 ="enc";
+    String str1 = scanner.nextLine();
+	String text = scanner.nextLine();
+	Integer number = scanner.nextInt();
+	char[] str2 = text.toCharArray();
+	if(str1.equals(str5)){
+	    for (int x = 0; x < str2.length; x = x + 1) {
+	    int y = (int)str2[x]+number;
+        System.out.print((char)y);
+	    }
+	}
+	else{
+	   for (int x = 0; x < str2.length; x = x + 1) {
+	    int y = (int)str2[x]-number;
+        System.out.print((char)y);
+	    }
+	}
     }
 }
+