diff --git a/a1/program.c b/a1/program.c
index 510d095..c396463 100644
--- a/a1/program.c
+++ b/a1/program.c
@@ -15,11 +15,20 @@ int main () {
         if (!strcmp("\n", input))
             break;
 
+        if(i == 0){
+            for(int j = 0; input[j] != '\0' && input[j] != '\n'; j++)
+                if(!isdigit(input[j]) && input[j] != '.'){
+                    printf("Nepodarilo sa nacitat zaklad\n");
+                    return 0;
+                }
+        }
+        
         for(int j = 0; input[j] != '\0' && input[j] != '\n'; j++)
             if(!isdigit(input[j]) && input[j] != '.'){
                 printf("Nepodarilo sa nacitat polynom na %d mieste.\n", i);
                 return 0;
             }
+            
         if (i == 0){
             x = (double)strtod(input, &ptr);
         }