Start: Nov, 12, 2017 10:00:00
2017秋Python程序设计基础培训第四次作业
End: Nov, 19, 2017 12:00:00
Time elapsed:
Time remaining:
Problem_ID: D
Result: Accepted
Time: 97ms
Memory: 24436kB
Author: eboyhcf
In contest: 1124 
s=list(input().split())
print(s[0][int(s[1]):])