10451045 SUSTech Online Judge
This problem is in Contest(s) below:
Contest 1009:dsaa_lab5 for group1, 2 students
Contest 1024:Sprint_dsaa_lab5
Contest 1057:2019Fall_DSAA_Lab5_String
Contest 1067:2020 Spring Lab6
Contest 1144:CS203 2023 Fall Lab 5 String
Contest 1008:dsaa_lab5