✨ feat(solutions)：添加欧拉项目第9题和第10题的解决方案

📝 docs(solutions/0009)：添加数学推导说明文档
✨ feat(solutions/0010)：实现素数求和算法并添加性能计时器

solutions/0010.SumPrimes/eular_10.py

@@ -0,0 +1,34 @@
+"""
+Sum of primes below 2 million
+"""
+
+import time
+
+
+def timer(func):
+    def wrapper(*args, **kwargs):
+        start = time.time()
+        result = func(*args, **kwargs)
+        end = time.time()
+        print(f"{func.__name__} took {end - start:.6f} seconds")
+        return result
+
+    return wrapper
+
+
+def sieve_primes(max: int) -> list[int]:
+    primes = [True] * (max + 1)
+    primes[0:2] = [False, False]
+    for i in range(2, max + 1):
+        if primes[i]:
+            primes[i * i : max : i] = [False] * ((max - 1 - i * i) // i + 1)
+    return [i for i in range(max) if primes[i]]
+
+
+@timer
+def sum_primes(max: int) -> int:
+    return sum(sieve_primes(max))
+
+
+if __name__ == "__main__":
+    print(sum_primes(2_000_000))