diff --git a/cv7/program.c b/cv7/program.c
index 842608c..bd1006e 100644
--- a/cv7/program.c
+++ b/cv7/program.c
@@ -4,13 +4,15 @@
 #include <assert.h>
 #include <string.h>
 
+
 #define SIZE 200
 
 struct tree
 {
 
   char value[SIZE];
-  
+
+
   struct tree *left, *right;
 };
 
@@ -19,23 +21,20 @@ struct tree* read_tree()
     char buffer[SIZE];
     memset(buffer,0,SIZE);
     char* r = fgets(buffer,SIZE,stdin);    
-        
-  
+    
     assert(r);
 
     if(buffer[0]=='\n')
         return NULL;
     struct tree* node = (struct tree*)calloc(1,sizeof(struct tree));
     memcpy(node->value,buffer,SIZE);
-  
+    
     node->left=NULL;
     node->right=NULL;
 
     if(node->value[0]!='*')
-    {
-       
-        node->left=read_tree(node->left);
- 
+    {   
+        node->left=read_tree(node->left);    
         node->right=read_tree(node->right);
     }
     return node;
@@ -45,8 +44,7 @@ struct tree* read_tree()
 void print_tree(struct tree* tree,int offset){
     for (int i = 0; i < offset; i++){
         printf(".");
-    }
-
+    }    
     if(tree)
         printf("%s",tree->value);
     if (tree->left){
@@ -83,20 +81,27 @@ int main(void)
         printf("%s",p->value);
         if(p->value[0]=='*')
             break;                
-        do
+        t=fgetc(stdin);
+        if(t=='a')
         {
-            t=fgetc(stdin);
-            if(t=='a')
-            {p=p->left; break;}
-            if(t=='n')
-            {p=p->right; break;}
-        }while(1);
+            p=p->left; break;
+        }
+        else if(t=='n')
+        {
+            p=p->right; break;
+        }
+        else 
+        {
+            printf("Nerozumiem\n");
+        }   
         
     }while(1);
-  
+ 
     printf("Koniec\n");
     destroy_tree(tr);
     tr=NULL;
-
+ 
   return 0;
 }
+
+