题解 | #进制转换#
进制转换
https://www.nowcoder.com/practice/8f3df50d2b9043208c5eed283d1d4da6
num = input()[2:] ls = list(map(str, num)) n16 = "0123456789ABCDEF" di = {} for n, j in enumerate(n16): di[j] = n res = 0 for n, i in enumerate(ls[::-1]): res += (16 ** n) * di[i] print(res)