add: 220104

2201/220104.cpp

@@ -0,0 +1,12 @@
+#include <iostream>
+
+class Solution {
+public:
+	static int bitwiseComplement(int n) {
+		return n ? ((1 << ((31 ^ __builtin_clz(n)) + 1)) - 1) ^ n : 1;
+	}
+};
+
+int main() {
+	std::printf("%d\n", Solution::bitwiseComplement(0));
+}