diff --git a/AcWing/654/654.cpp b/AcWing/654/654.cpp
new file mode 100644
index 00000000..011fe8cd
--- /dev/null
+++ b/AcWing/654/654.cpp
@@ -0,0 +1,10 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    int a;
+    cin >> a;
+    cout << a / 3600 << ':' << a % 3600 / 60 << ':' << a % 60 << endl;
+    return 0;
+}