题解 | 无限长正整数排列字符串
无限长正整数排列字符串
https://www.nowcoder.com/practice/82c92d2321bb4220a3006d52a95a8bdd
import sys
S = ''
for line in sys.stdin:
a = line.split()
n = int(a[0])
for i in range(1,1000):
if len(S) <=1001:
S = S + str(i)
print(S[n-1])
