Create 3021-alice-and-bob-playing-flower-game.java

Author: sanajitjana

Medium/3021-alice-and-bob-playing-flower-game.java

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+// LeetCode Problem: 3021. Alice and Bob Playing Flower Game
+// https://leetcode.com/problems/alice-and-bob-playing-flower-game/
+//
+// Description:
+// Alice and Bob have flowers in a garden. Alice has n flowers and Bob has m flowers.
+// They play a game where in each round, they both pick one flower each. If the sum of
+// the number of petals of their flowers is odd, Alice wins. Otherwise, Bob wins.
+// Return the total number of rounds where Alice wins.
+//
+// Example 1:
+// Input: n = 3, m = 2
+// Output: 3
+//
+// Example 2:
+// Input: n = 1, m = 1
+// Output: 0
+//
+// Constraints:
+// 1 <= n, m <= 10^5
+
+class Solution {
+    public long flowerGame(int n, int m) {
+        return (long) n * m / 2;
+    }
+}
+
+// For local testing
+class Main {
+    public static void main(String[] args) {
+        Solution sol = new Solution();
+
+        System.out.println(sol.flowerGame(3, 2)); // Expected: 3
+        System.out.println(sol.flowerGame(1, 1)); // Expected: 0
+        System.out.println(sol.flowerGame(5, 4)); // Quick check
+    }
+}