diff --git a/AcWing/801/801.cpp b/AcWing/801/801.cpp
new file mode 100644
index 00000000..f73ae9ff
--- /dev/null
+++ b/AcWing/801/801.cpp
@@ -0,0 +1,15 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int n, t;
+
+int main() {
+    cin >> n;
+    for (int i = 0; i < n; i++) {
+        cin >> t;
+        cout << __builtin_popcount(t) << ' ';
+    }
+    cout << endl;
+    return 0;
+}