题解 | 进制转换
import sys
for line in sys.stdin:
a = line.split()
#print(a[2:])
af_value="".join(a)[2:]
x_value=0
A,B,C,D,E,F=10,11,12,13,14,15
def trans(s):
if s=="A": return 10
elif s=="B": return 11
elif s=="C": return 12
elif s=="D": return 13
elif s=="E": return 14
elif s=="F": return 15
else: return int(s)
for i in range(len(af_value)):
x_value=x_value+16**(len(af_value)-i-1)*trans(af_value[i])
print(x_value)
#str=input()[2:]
#print(str)
