Update 1799-maximize-score-after-n-operations.js

Author: everthis

1799-maximize-score-after-n-operations.js

@@ -1,3 +1,43 @@
+/**
+ * @param {number[]} nums
+ * @return {number}
+ */
+const maxScore = function (nums) {
+  const len = nums.length
+  const n = len / 2
+  const allMask = 2 ** 14 - 1
+  const memo = Array.from({ length: n + 1 }, () => Array())
+  
+  return helper(1, 0)
+  
+  function helper(op, mask) {
+    if(op > n) return 0
+    if(memo[op][mask]) return memo[op][mask]
+
+    let res = 0
+    for(let i = 0; i < len; i++) {
+      const a = nums[i]
+      for(let j = i + 1; j < len; j++) {
+        const b = nums[j]
+        const newMask = (1 << i) + (1 << j)
+        if((mask & newMask) === 0) {
+          res = Math.max(res, op * gcd(a, b) + helper(op + 1, mask | newMask))
+        }
+      }
+    }
+    // console.log(res)
+    memo[op][mask] = res
+    
+    return memo[op][mask]
+  }
+}
+
+function gcd(a, b) {
+  return b === 0 ? a : gcd(b, a % b)
+}
+
+// another
+
 /**
  * @param {number[]} nums
  * @return {number}