Time: 521 ms (39.98%), Space: 103.6 MB (72.00%) - LeetHub

Author: knockcat

2244-minimum-rounds-to-complete-all-tasks/2244-minimum-rounds-to-complete-all-tasks.cpp

@@ -0,0 +1,24 @@
+class Solution {
+public:
+    int minimumRounds(vector<int>& tasks) {
+        
+        unordered_map<int,int> mp;
+        
+        int ans = 0;
+        
+        for(auto itr : tasks)
+            ++mp[itr];
+        
+        for(auto itr : mp)
+        {
+            if(itr.second == 1)
+                return -1;
+            else if(itr.second % 3 == 0)
+                ans += itr.second/3;
+            else
+                ans += itr.second/3 + 1;
+        }
+        
+        return ans;
+    }
+};