NCPC25 finished

src/test/java/DTest.java

@@ -0,0 +1,22 @@
+import com.kattis.ncpc25.log.rider.D;
+import org.junit.jupiter.api.Test;
+
+import java.awt.*;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class DTest {
+    @Test
+    public void DTests()
+    {
+        assertTrue(testMaxDiff(D.getTotalLength(new Point[]{new Point(-1, -7), new Point(-1, -11), new Point(0, -9), new Point(2, 2), new Point(1, -2), new Point(-2, -1), new Point(3, 1), new Point(-1, -5), new Point(0, -3), new Point(-3, -11)}), 17.186912));
+        assertTrue(testMaxDiff(D.getTotalLength(new Point[]{new Point(1, 0), new Point(0,0), new Point(1,1)}), 2));
+
+    }
+
+    public boolean testMaxDiff(double value, double excpected)
+    {
+        if(value == excpected) return true;
+        return value <= excpected + Math.pow(10, -6) && value >= excpected - Math.pow(10, -6);
+    }
+}