complete 2252.py 2623.py 9527.py 31403.py 32822.py

zeta_python/completed/9527.py

@@ -0,0 +1,17 @@
+def S(n: int):
+    s = n & 1
+    for i in range(60 - 1, 0, -1):
+        if n & (1 << i):
+            s += S.points[i - 1] + (n - (1 << i) + 1)
+            n -= 1 << i
+    return s
+
+
+S.points = [0] * 60
+S.points[0] = 1
+for i in range(1, 60):
+    S.points[i] = 2 * S.points[i - 1] + (1 << i)
+
+if __name__ == "__main__":
+    A, B = map(int, input().split())
+    print(S(B) - S(A - 1))