git reimport

archive/2017.01/2017.01.07 - unsorted/A.java

@@ -0,0 +1,29 @@
+package chelper;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import io.InputReader;
+import io.OutputWriter;
+
+public class A {
+  public void solve(int testNumber, InputReader in, OutputWriter out) {
+    int n = in.nextInt();
+
+    List<Integer> res = new ArrayList<>();
+
+    if (n % 2 == 1) {
+      res.add(3);
+      n -= 3;
+    }
+
+    for (int i = 0; i < n / 2; i++) {
+      res.add(2);
+    }
+
+    out.println(res.size());
+    for (int i : res) {
+      out.print(i + " ");
+    }
+  }
+}