dev-jelly
diff --git a/‎.idea/modules.xml‎
Lines changed: 1 addition & 1 deletion b/‎.idea/modules.xml‎
Lines changed: 1 addition & 1 deletion
diff --git a/‎leetcode/3250/Solution.cpp‎
Lines changed: 20 additions & 0 deletions b/‎leetcode/3250/Solution.cpp‎
Lines changed: 20 additions & 0 deletions
@@ -0,0 +1,20 @@
+class Solution {
+public:
+    bool checkIfExist(vector<int>& arr) {
+        map<int, bool> checker;
+        for (int a : arr) {
+            checker[a] = true;
+        }
+        bool zero = false;
+        for (int a : arr) {
+            if(a == 0 && !zero) {
+                zero = true;
+                continue;
+            }
+            if(checker[a * 2]) {
+                return true;
+            }
+        }
+        return false;
+    }
+};