题解 | #圆周率的截取#
圆周率的截取
https://www.nowcoder.com/practice/cf8c7858d3ae48ccadb660b05d3cead5
from math import floor, ceil
pi = input()
n = int(input())
print(pi[n])
for i in range(0,len(pi)):
if pi[i]=='.':
for j in range(i,n+1+i):
print(pi[j],end='')
break
else:
print(pi[i],end='')
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