✨ C++ || 0 MS SOLUTION || ONE LINER
// O(1)\n\n\t\tclass Solution {\n\t\tpublic:\n\t\t\tint smallestEvenMultiple(int n) {\n\t\t\t\treturn n % 2 == 0 ? n : n * 2;\n\t\t\t}\n\t\t};
// O(1)\n\n\t\tclass Solution {\n\t\tpublic:\n\t\t\tint smallestEvenMultiple(int n) {\n\t\t\t\treturn n % 2 == 0 ? n : n * 2;\n\t\t\t}\n\t\t};
['Math', 'C', 'C++']