diff --git a/02_MENT/main_02_MENT.cpp b/02_MENT/main_02_MENT.cpp
index 194f4a0..becb934 100644
--- a/02_MENT/main_02_MENT.cpp
+++ b/02_MENT/main_02_MENT.cpp
@@ -52,28 +52,6 @@ PascalString intToDual(int n) {
     return string;
 }
 
-char intToHexChar(int n) {
-        switch(n) {
-            case 0: return '0';
-            case 1: return '1';
-            case 2: return '2';
-            case 3: return '3';
-            case 4: return '4';
-            case 5: return '5';
-            case 6: return '6';
-            case 7: return '7';
-            case 8: return '8';
-            case 9: return '9';
-            case 10: return 'A';
-            case 11: return 'B';
-            case 12: return 'C';
-            case 13: return 'D';
-            case 14: return 'E';
-            case 15: return 'F';
-            default: return 'X';
-        }
-}
-
 PascalString intToHex(int n) {
     int i = std::to_string(n).length();
     PascalString string = {i};
@@ -94,10 +72,10 @@ int getInt(char character) {
 PascalString bitwiseDualAnd(PascalString a, PascalString b) {
     PascalString result = {a.length, '0'};
 
-    for(int i = b.length; i >= 0; --i) {
+    for(int i = a.length; i >= 0; --i) {
         if(a.length < i) result.characters[i] = a.characters[i];
-        println("i: ", i, " ", intToHexChar(getInt(a.characters[i]) & getInt(b.characters[i])));
-        result.characters[i] = intToHexChar(getInt(a.characters[i]) & getInt(b.characters[i]));
+        println("i: ", i, " ", getInt(a.characters[i]) & getInt(b.characters[i]));
+        result.characters[i] = getInt(a.characters[i]) & getInt(b.characters[i]);
     }
 
     return result;