diff --git a/indexRownowagi/index.cs b/indexRownowagi/index.cs
new file mode 100644
index 0000000..594ac9f
--- /dev/null
+++ b/indexRownowagi/index.cs
@@ -0,0 +1,46 @@
+ 
+ using System;
+					
+public class Program
+{
+	public static void Main()
+	{
+		int[] A = {-7, 1, 5, 2, -4, 3, 0};
+		
+		int length = A.Length;
+		
+		
+		
+		
+		if(length < 3)
+		{
+			System.Console.Write("-1");
+		}
+		else
+		{
+            for(int k=1; k<length; k++)
+            {
+				int sum1=0, sum2=0;
+                for(int i=0; i<k; i++)
+                {
+                    sum1=sum1+A[i];
+                
+                }
+                for(int j=k+1; j<length; j++)
+                {
+                    sum2=sum2+A[j];
+                }
+                if(sum1 == sum2)
+                {
+                    System.Console.Write(k);
+                    break;
+                }
+                if(k==length)
+                {
+                    System.Console.Write("-1");
+                }
+		    }
+        }
+		
+	}
+}
\ No newline at end of file
diff --git a/sortowanie/Program.cs b/sortowanie/Program.cs
new file mode 100644
index 0000000..e8e3bd2
--- /dev/null
+++ b/sortowanie/Program.cs
@@ -0,0 +1,43 @@
+using System;
+
+namespace szkola_2._0;
+{
+    
+    class Program
+    {
+
+        public static void sortowanie(int[] sort;)
+        {
+            int length = sort.length;
+            do
+            {
+                for(int i=0; i<length-1; i++)
+                {
+                    if(sort[i]>sort[i+1])
+                    {
+                        int support = sort[i];
+                        sort[i] = sort[i+1];
+                        sort[i+1] = support;
+                    }
+                }
+                length--;
+            }
+            while(length>1);
+            for(int j = length-1; j >= 0; j--)
+            {
+                Console.Write(sort[j] + ",");
+            }
+        }
+
+        static void Main(string[] args)
+        {
+            int[] sortowanie = {21, 14, 1, 66, 45}; 
+
+            sortowanie(sortowanie[]);
+        }
+
+
+        
+
+    }
+}
diff --git a/sortowanie/Szkola.csproj b/sortowanie/Szkola.csproj
new file mode 100644
index 0000000..2082704
--- /dev/null
+++ b/sortowanie/Szkola.csproj
@@ -0,0 +1,8 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net5.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>