diff --git a/Hydro/d/ccf/CSPJ2019A/CSPJ2019A.cpp b/Hydro/d/ccf/CSPJ2019A/CSPJ2019A.cpp
new file mode 100644
index 00000000..84f6f3ab
--- /dev/null
+++ b/Hydro/d/ccf/CSPJ2019A/CSPJ2019A.cpp
@@ -0,0 +1,15 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int ans;
+string s;
+
+int main() {
+    cin >> s;
+    for (auto c : s) {
+        ans += c == '1';
+    }
+    cout << ans << endl;
+    return 0;
+}