feat(codeforces): add solutions template for p2189A and p2189B

Author: lzwjava

src/main/java/com/lzw/solutions/codeforces/p2189A/Main.java

@@ -0,0 +1,20 @@
+package com.lzw.solutions.codeforces.p2189A;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.PrintWriter;
+
+public class Main {
+    private static final BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+    private static final PrintWriter out = new PrintWriter(System.out, true);
+
+    private static void solve() throws IOException {
+        // your code here
+    }
+
+    public static void main(String[] args) throws IOException {
+        solve();
+        out.close();
+    }
+}

src/main/java/com/lzw/solutions/codeforces/p2189B/Main.java

@@ -0,0 +1,20 @@
+package com.lzw.solutions.codeforces.p2189B;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.PrintWriter;
+
+public class Main {
+    private static final BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
+    private static final PrintWriter out = new PrintWriter(System.out, true);
+
+    private static void solve() throws IOException {
+        // your code here
+    }
+
+    public static void main(String[] args) throws IOException {
+        solve();
+        out.close();
+    }
+}