题解 | #编码#
编码
https://www.nowcoder.com/practice/6fc8716ee33e4cc59d58d7e18712094e
s = input()
n = len(s)
if n == 1:
x = ord(s) - 97
print(x * (1+25+25**2+25**3))
elif n == 2:
x1 = ord(s[0]) - 97
x2 = ord(s[1]) - 97
ans1 = x1 * (1+25+25**2+25**3)
ans2 = x2 * (1+25**2+25)
print(ans1+ans2+1)
elif n == 3:
x1 = ord(s[0]) - 97
x2 = ord(s[1]) - 97
x3 = ord(s[2]) - 97
ans1 = x1 * (1+25+25**2+25**3)
ans2 = x2 * (1+25**2+25)
ans3 = x3 * (1+25)
print(ans1+ans2+ans3+2)
elif n == 4:
x1 = ord(s[0]) - 97
x2 = ord(s[1]) - 97
x3 = ord(s[2]) - 97
x4 = ord(s[3]) - 97
ans1 = x1 * (1+25+25**2+25**3)
ans2 = x2 * (1+25**2+25)
ans3 = x3 * (1+25)
ans4 = x4
print(ans1+ans2+ans3+ans4+3)
