diff --git a/problem/P5657/P5657.cpp b/problem/P5657/P5657.cpp
new file mode 100644
index 00000000..e1393ab5
--- /dev/null
+++ b/problem/P5657/P5657.cpp
@@ -0,0 +1,19 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    unsigned long long n, k;
+    cin >> n >> k;
+    while ((--n) + 1) {
+        if ((1ull << n) - 1 < k) {
+            printf("1");
+            k = (1ull << n) - k + (1ull << n) - 1;
+        }
+        else {
+            printf("0");
+        }
+    }
+    cout << endl;
+    return 0;
+}
\ No newline at end of file