945 - Cpp

Author: ashwek

solution/0985.Sum of Even Numbers After Queries/Solution.cpp

@@ -0,0 +1,33 @@
+class Solution {
+public:
+    vector<int> sumEvenAfterQueries(vector<int>& A, vector<vector<int>>& queries) {
+
+        vector<int> ans;
+
+        int Sum = 0;
+        for(int i = 0; i < A.size(); i++){
+            if( ! ( A[i] & 1 ) )
+                Sum += A[i];
+        }
+
+        int old;
+
+        for(int i = 0; i < queries.size(); i++){
+            
+            old = A[queries[i][1]];
+            A[queries[i][1]] = A[queries[i][1]] + queries[i][0];
+
+            if( (old % 2 != 0) && (A[queries[i][1]] % 2 == 0) )
+                Sum += A[queries[i][1]];
+            else if( (old % 2 == 0) && (A[queries[i][1]] % 2 == 0) )
+                Sum = Sum - old + A[queries[i][1]];
+            else if( (old % 2 == 0) && (A[queries[i][1]] % 2 != 0) )
+                Sum = Sum - old;
+
+            ans.push_back(Sum);
+
+        }
+
+        return ans;
+    }
+};