diff --git "a/leetcode3/\354\240\225\354\247\204\354\230\201/385. Mini Parser" "b/leetcode3/\354\240\225\354\247\204\354\230\201/385. Mini Parser"
new file mode 100644
index 000000000..0ec6dd05b
--- /dev/null
+++ "b/leetcode3/\354\240\225\354\247\204\354\230\201/385. Mini Parser"	
@@ -0,0 +1,51 @@
+/**
+ * // This is the interface that allows for creating nested lists.
+ * // You should not implement it, or speculate about its implementation
+ * function NestedInteger() {
+ *
+ *     Return true if this NestedInteger holds a single integer, rather than a nested list.
+ *     @return {boolean}
+ *     this.isInteger = function() {
+ *         ...
+ *     };
+ *
+ *     Return the single integer that this NestedInteger holds, if it holds a single integer
+ *     Return null if this NestedInteger holds a nested list
+ *     @return {integer}
+ *     this.getInteger = function() {
+ *         ...
+ *     };
+ *
+ *     Set this NestedInteger to hold a single integer equal to value.
+ *     @return {void}
+ *     this.setInteger = function(value) {
+ *         ...
+ *     };
+ *
+ *     Set this NestedInteger to hold a nested list and adds a nested integer elem to it.
+ *     @return {void}
+ *     this.add = function(elem) {
+ *         ...
+ *     };
+ *
+ *     Return the nested list that this NestedInteger holds, if it holds a nested list
+ *     Return null if this NestedInteger holds a single integer
+ *     @return {NestedInteger[]}
+ *     this.getList = function() {
+ *         ...
+ *     };
+ * };
+ */
+/**
+ * @param {string} s
+ * @return {NestedInteger}
+ */
+var deserialize = function(s) {
+    const stack = [];
+    let num = "";
+
+    for (let i = 0; i<s.length; i++){
+        const ch = s[i];
+        if (ch == '[')
+    }
+};
diff --git "a/leetcode3/\354\240\225\354\247\204\354\230\201/463. Island Perimeter" "b/leetcode3/\354\240\225\354\247\204\354\230\201/463. Island Perimeter"
new file mode 100644
index 000000000..d5c0d93bf
--- /dev/null
+++ "b/leetcode3/\354\240\225\354\247\204\354\230\201/463. Island Perimeter"	
@@ -0,0 +1,27 @@
+/**
+ * @param {number[][]} grid
+ * @return {number}
+ */
+var islandPerimeter = function(grid) {
+    let count = 0;
+
+    for (let i = 0; i<grid.length; i++){
+        for (let j = 0; j<grid[0].length; j++){
+            // land 일 때
+            if (grid[i][j] == 1){
+                count += 4;
+
+                if (j>0 && grid[i][j-1] == 1){
+                    count -= 1;
+                } if (i>0 && grid[i-1][j] == 1){
+                    count -= 1;
+                } if (j<grid[0].length-1 && grid[i][j+1] == 1){
+                    count -= 1;
+                } if (i<grid.length-1 && grid[i+1][j] == 1){
+                    count -= 1;
+                }
+            }
+        }
+    }
+    return count;
+};