题解 | #圆周率的截取#
圆周率的截取
https://www.nowcoder.com/practice/cf8c7858d3ae48ccadb660b05d3cead5
import decimal
p = input()
n = int(input())
print(p[n])
decimal_point_index = p.find(".")
if decimal_point_index != -1:
print(p[:decimal_point_index+n+1])
else:
print(p)
