Sum Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others) Total Submission(s): 589 Accepted Submission(s): 292 Problem Description Sample Input 2 Sample Output 2 Hint 1. For N = 2, S(1) = S(2) = 1. 2. The input
经过测试,python会缓存的小整数的范围是 [-5, 256] # True a = 1 b = 1 print(a is b) # True a = "good" b = "good" print(a is b) # False a = "very good morning" b = "very good morning" print(a is b) # False a = [] b = [] print(a is b)