[fix](app) Replace int with round to improve numerical precision

app.py

@@ -164,7 +164,7 @@ def calculator(currency, budget, strategy, extra_rate, *amount):
     model.addCons(obj1 <= budget)
 
     # first optimize
-    model.hideOutput()
+    # model.hideOutput()
     model.optimize()
 
     if model.getStatus() == "optimal":
@@ -184,7 +184,7 @@ def calculator(currency, budget, strategy, extra_rate, *amount):
 
         if model.getStatus() == "optimal":
             for i, var in enumerate(x):
-                if (v := int(model.getVal(var))) > 0 and sold_prices[i] > 0:
+                if (v := round(model.getVal(var))) > 0 and sold_prices[i] > 0:
                     solution.append(
                         f"{plants_names[i]} ({sold_prices[i]} {currency}): {v}\n"
                     )
@@ -192,9 +192,9 @@ def calculator(currency, budget, strategy, extra_rate, *amount):
                     total_count += v
 
             if optimal_total_value == budget:
-                return f"Great! Found a combination of items with a total value equal to the budget ({budget} {currency}).😃\n\n{''.join(solution)}\nTotal value: {int(total_price)} {currency}\nTotal count: {total_count}"  # Count: {int(model.getObjVal())}
+                return f"Great! Found a combination of items with a total value equal to the budget ({budget} {currency}).😃\n\n{''.join(solution)}\nTotal value: {total_price} {currency}\nTotal count: {total_count}"  # Count: {int(model.getObjVal())}
 
-            return f"Oops! {int(budget - optimal_total_value)} {currency} short of the target value ({budget} {currency}).😣\n\n{''.join(solution)}\nTotal value: {int(total_price)} {currency}\nTotal count: {total_count}"  # Count: {int(model.getObjVal())}
+            return f"Oops! {round(budget - optimal_total_value)} {currency} short of the target value ({budget} {currency}).😣\n\n{''.join(solution)}\nTotal value: {total_price} {currency}\nTotal count: {total_count}"  # Count: {int(model.getObjVal())}
 
         return "No solution found for the second optimization!"