diff --git a/solutions/0056.PowerfulDigitSum/euler_56.py b/solutions/0056.PowerfulDigitSum/euler_56.py
index ef30316..cacb080 100644
--- a/solutions/0056.PowerfulDigitSum/euler_56.py
+++ b/solutions/0056.PowerfulDigitSum/euler_56.py
@@ -7,7 +7,6 @@ Considering natural numbers of the form, a^b , where a,b < 100 , what is the max
 """
 
 import time
-from decimal import MAX_EMAX
 from functools import wraps
 from typing import Any, Callable, TypeVar
 
diff --git a/solutions/0057.SquareRoot/euler_57.py b/solutions/0057.SquareRoot/euler_57.py
new file mode 100644
index 0000000..52ff584
--- /dev/null
+++ b/solutions/0057.SquareRoot/euler_57.py
@@ -0,0 +1,40 @@
+'''
+
+'''
+import time
+from functools import wraps
+from typing import Any, Callable, TypeVar
+
+F = TypeVar("F", bound=Callable[..., Any])
+
+
+def benchmark(repeat: int = 1) -> Callable[[F], F]:
+    if repeat < 1:
+        raise ValueError("repeat must >= 1")
+
+    def decorator(func: F) -> F:
+        @wraps(func)
+        def wrapper(*args: Any, **kwargs: Any) -> Any:
+            total = 0.0
+            result = None
+
+            for _ in range(repeat):
+                start = time.perf_counter()
+                result = func(*args, **kwargs)
+                end = time.perf_counter()
+                total += end - start
+
+            wrapper.avg_time = total / repeat  # type: ignore[attr-defined]
+            wrapper.total_time = total  # type: ignore[attr-defined]
+
+            print(
+                f"[Benchmark] {func.__name__} | repeated {repeat} times | "
+                f"average: {wrapper.avg_time:.6f}s | total: {wrapper.total_time:.6f}s"  # type: ignore[attr-defined]
+            )
+            return result
+
+        wrapper.avg_time = 0.0  # type: ignore[attr-defined]
+        wrapper.total_time = 0.0  # type: ignore[attr-defined]
+        return wrapper  # type: ignore[return-value]
+
+    return decorator
\ No newline at end of file