diff --git "a/leetcode3/\354\240\225\354\247\204\354\230\201/835. Image Overlap" "b/leetcode3/\354\240\225\354\247\204\354\230\201/835. Image Overlap"
new file mode 100644
index 00000000..c970da64
--- /dev/null
+++ "b/leetcode3/\354\240\225\354\247\204\354\230\201/835. Image Overlap"	
@@ -0,0 +1,19 @@
+/**
+ * @param {number[][]} img1
+ * @param {number[][]} img2
+ * @return {number}
+ */
+var largestOverlap = function(img1, img2) {
+    let count = 0;
+    let max = 0;
+    
+    for (let i = 0; i<img1.length; i++){
+        for (let j = 0; j<img1.length; j++){
+            if (img1[i][j] == 1) {
+
+            }
+        }
+    }
+
+    max = Math.max(max, count);
+};
diff --git "a/leetcode3/\354\240\225\354\247\204\354\230\201/860. Lemonade Change" "b/leetcode3/\354\240\225\354\247\204\354\230\201/860. Lemonade Change"
new file mode 100644
index 00000000..678b6e0c
--- /dev/null
+++ "b/leetcode3/\354\240\225\354\247\204\354\230\201/860. Lemonade Change"	
@@ -0,0 +1,30 @@
+/**
+ * @param {number[]} bills
+ * @return {boolean}
+ */
+var lemonadeChange = function(bills) {
+    let five = 0;
+    let ten = 0;
+
+    for (let i = 0; i<bills.length; i++){
+        if (bills[i] == 5){
+            five++;
+        } else if (bills[i] == 10){
+            if (five == 0){
+                return false;
+            }
+            ten++;
+            five--;
+        } else {
+            if (ten > 0 && five > 0){
+                ten--;
+                five--;
+            } else if (five >= 3){
+                five -=3;
+            } else {
+                return false;
+            }
+        }
+    }
+    return true;
+};