fix build

fishercoder1534 · fishercoder1534 · commit 5a7bc6055c13 · 2020-08-22T10:16:10.000-07:00
diff --git a/src/main/java/com/fishercoder/solutions/_1557.java b/src/main/java/com/fishercoder/solutions/_1557.java
@@ -1,6 +1,11 @@
 package com.fishercoder.solutions;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.Map;
 
 public class _1557 {
     public static class Solution1 {
