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karygauss03 · karygauss03 · commit 3565becdff2a · 2025-03-05T22:03:04.000+01:00
diff --git a/2649-count-total-number-of-colored-cells/2649-count-total-number-of-colored-cells.cpp b/2649-count-total-number-of-colored-cells/2649-count-total-number-of-colored-cells.cpp
@@ -0,0 +1,6 @@
+class Solution {
+public:
+    long long coloredCells(int n) {
+        return 1LL + (long long)n * (long long)(n - 1) * 2LL;
+    }
+};
