对于Python来说,都没有溢出,直接乘就完了。
Code Pythonif __name__ == '__main__': for num in range(1, 1000000008): val = (num * 2021) % 1000000007 if val == 999999999: print(num)Answer: 17812964

对于Python来说,都没有溢出,直接乘就完了。
Code Pythonif __name__ == '__main__': for num in range(1, 1000000008): val = (num * 2021) % 1000000007 if val == 999999999: print(num)Answer: 17812964