Update sol4.py

Author: MaximSmolskiy

project_euler/problem_009/sol4.py

@@ -45,7 +45,7 @@ def solution(n: int = 1000) -> int:
 
     squares = get_squares(n)
     squares_set = set(squares)
-    for a in range(1, n // 3 + 1):
+    for a in range(1, n // 3):
         for b in range(a + 1, (n - a) // 2 + 1):
             if (
                 squares[a] + squares[b] in squares_set