diff --git a/submissions/gamalmouhssine/Program.cs b/submissions/gamalmouhssine/Program.cs
new file mode 100644
index 00000000..5b8396ad
--- /dev/null
+++ b/submissions/gamalmouhssine/Program.cs
@@ -0,0 +1,47 @@
+public class Program
+{
+    public static void Main(string[] args)
+    {
+        var lines = File.ReadLines("input.txt").Select(line => line.Trim().Split(',')).ToArray();
+
+        var cityPrices = new Dictionary<string, decimal>();
+        var productPrices = new Dictionary<string, decimal>();
+
+        foreach (var line in lines)
+        {
+            string city = line[0];
+            string product = line[1];
+            decimal price = decimal.Parse(line[2]);
+
+            if (price < 1.00m || price > 100.00m)
+            {
+                continue;
+            }
+
+            if (!cityPrices.ContainsKey(city))
+            {
+                cityPrices[city] = 0m;
+            }
+            cityPrices[city] += price;
+
+            if (!productPrices.ContainsKey(product) || productPrices[product] > price)
+            {
+                productPrices[product] = price;
+            }
+        }
+
+        string cheapestCity = cityPrices.OrderBy(kv => kv.Value).First().Key;
+        decimal cheapestPrice = cityPrices[cheapestCity];
+
+        var topProducts = productPrices.OrderBy(kv => kv.Value).Take(5).ToArray();
+
+        using (var writer = new StreamWriter("output.txt"))
+        {
+            writer.WriteLine($"{cheapestCity} {cheapestPrice:0.0}");
+            foreach (var product in topProducts)
+            {
+                writer.WriteLine($"{product.Key} {product.Value:0.0}");
+            }
+        }
+    }
+}